METAL PIPES
AND CONNECTING PARTS
TO THEM

Part 4

PIPES MADE OF FERROUS METALS AND ALLOYS
CAST AND CONNECTING PARTS FOR THEM.
MAIN DIMENSIONS.
TECHNOLOGICAL TEST METHODS
PIPES

GOST 9583-75*

Moscow

IPC PUBLISHING HOUSE OF STANDARDS

1998

STATE STANDARD OF THE USSR UNION

By Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated 08.08.75 No. 2105, the introduction date was set

01.01.77

The validity period was lifted according to Protocol No. 3-93 of the Interstate Council for Standardization, Metrology and Certification (IUS 5-6-93)

This standard applies to cast iron pressure socket pipes intended for water pressure systems.

1. ASSORTMENT

1.1. Depending on the wall thickness, pipes are divided into three classes: LA, A and B.

1.2. The dimensions and weight of the pipes must correspond to those indicated in the drawing. - and in the table. - .

Note: Dimensions and maximum deviations are established for uncoated pipes.

D y, mm

Outside diameter, D n, mm

Wall thickness S, mm

Pipe weight, kg, with pipe length L, m

Weight 1 linear m pipe, kg

table 2

Class A pipes

Conditional pass D y, mm

Outside diameter

D n, mm

Wall thickness S, mm

Pipe weight, kg, with pipe length L, m

Weight 1 linear m pipe, kg

Table 3

Class B pipes

D 2

R

Bell weight, kg

Note: Maximum values allowed " p» for pipes: D at 65 - 80 mm - 1.0 mm; For D at 100 - 250 mm - 3.0 mm; D at 300 - 500 mm - 5.0 mm; For D at 600 - 1000 mm - 8.0 mm.

1.3. Depending on the length of the pipe, they are made: measured length in accordance with the table. - , unmeasured length ranging from the lower length values to the upper length values indicated in the table. - , up to plus 500 mm.

It is allowed to supply 10% of pipes from a batch, shortened by no more than 20% compared to the length indicated in the table. - , for pipes with a nominal bore up to 150 mm inclusive, and by 25% for pipes of other nominal bores.

1.4. The transition of the cylindrical part of the pipe into the socket along the outer contour is performed with a slope (see drawing) or in the form of a ledge (see drawing), and along the internal contour - with a slope (see drawing) or in the form of a ledge (see drawing) .

(Changed edition, Amendment No. 1).

1.6. The ovality of the joined section of the pipe shaft should not exceed the maximum deviations along the outer diameter.

For cut pipes this condition remains the same.

1.7. The deviation of the actual mass of the pipe from the theoretical one should not exceed +5%.

The minus tolerance is limited by the tolerance on the pipe wall thickness.

By agreement between the consumer and the manufacturer, the maximum weight may be exceeded, provided that all other requirements of this standard are met.

When calculating the mass of the pipe, the density of cast iron is taken to be 7.25 g/cm 3 .

Examples of symbols

Pipe of measured lengthL= 6000 mm, diameter 150 mm, class B:

Pipe ChPR 150 ´ 6000 B GOST 9583-75

The same, of unmeasured length, with a diameter of 400 mm, class aircraft:

Pipe ChPR 400 LA GOST 9583-75

2. TECHNICAL REQUIREMENTS

2.1. Pipes are manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner.

Pipes must be made of gray cast iron with a phosphorus content of no more than 0.7% and sulfur no more than 0.12% and be machineable.

(Changed edition, Amendment No. 1).

2.2. The hardness of the metal should not exceed: on the outer and inner surfaces of the pipe 230HB, in the middle part of the section of the pipe wall 215HB.

2.3. The strength of pipe metal when tested for bending by tensile and crushing of a ring sample must correspond to that indicated in the table. .

Table 5

	R, kgf/mm 2
Up to 300 incl.

Note: The standards for crushing a ring sample are not rejected for pipes with a diameter of up to 200 mm inclusive. - until 01.01.91, for pipes with a diameter over 200 mm - until 01.01.92. The definition is mandatory.

2.4. A hydraulic test must be carried out before coating the pipes with a protective non-toxic material. The test hydraulic pressure standards must correspond to those indicated in table. .

Table 6

4.7. Hydraulic testing is carried out in accordance with GOST 3845-75 with a pressure exposure of 15 s.

4.7a. For periodic monitoring (at least once a quarter) of the metal strength of pipes with a diameter of 600 mm using internal hydraulic pressureP ts under low-cycle loading, one sample with a length of at least 500 mm is cut from the selected pipe and tested on a special press (Fig. ), which ensures sealing of the ends of the sample without axial compression using an internal or external seal, filling it with water and increasing the pressure at a speed of no more than 2 kgf /cm 2 in 1 s.

When the pressure is reached R c equal to twice the test hydraulic pressure R n specified in table. , and holding under this pressure for 15 s, the pressure is reduced to zero, after which the test is continued with 40 repetitions.

After the sample has passed this test, the pressure is increased until the sample fails. The magnitude of pressure at the moment of destruction R p is recorded according to the arrow reading on the pressure gauge scale of class no more than 1.5.

Tensile strength of the sample by internal pressure (R p ) in Pa (kgf/cm2) is calculated using the formula

Where P R - destruction pressure, Pa (kgf/cm2);

D n - outer diameter of the sample at the point of destruction, mm;

S- wall thickness of the sample at the point of destruction, mm.

(Introduced additionally, Amendment No. 1).

5.3. Transportation of pipes with a diameter of 65 - 150 mm can be carried out in packages with a total weight of no more than 3 tons.

5.4. When transporting pipes, the length of the hanging ends should not exceed 25% of the pipe length.

5.5. Pipe storage in warehouses and construction sites should be carried out in stacks laid on level areas. The lower and subsequent rows are laid on wooden spacers.

The bells in each row should be directed alternately in different directions.

5.6. When storing pipes, the height of the stack should not exceed 3 m, and side supports are installed to prevent spontaneous rolling out of the pipes.

APPLICATION

Information

The ratio of non-destructive hydraulic pressure under low-cycle loading R c, norms of test hydraulic pressure R n and calculated hydraulic pressure in the pipeline R for pipes of various classes and diameters

Conditional bore, mm	Pressure ratio, not less, for pipe classes

	R ts/ R n	R n/ R	R ts/ R n	R n/ R	R ts/ R n	R n/ R
Up to 300 incl.

Reading time: 6 minutes.

Intra-house sewerage is a component of a person’s comfortable life. It is constructed from a set of materials, in particular from pipes and shaped elements made of cast iron.

Cast iron sewer pipes

GOST 6942 98: cast iron sewer pipes and fittings for them

This standard is an official document. According to its requirements, the following must be manufactured:

cast iron sewer pipe GOST 6942 98 in three sizes;
shaped parts for it, ensuring the installation of intra-house sewerage.

Application area

GOST requirements are mandatory for cast iron sewer pipes and fittings used for internal sewerage systems.

Normative references

The standard was developed taking into account a dozen other existing GOSTs. Among the main ones:

26358-84, which establishes general technical conditions for castings made from cast iron;
1412-85 for grades of cast iron containing flake graphite;
26645-85 with tolerances for mass, dimensions, allowances for machining of castings made of alloys and metals;
9812-74, which defines technical specifications for insulating petroleum bitumen;
11506-73, containing a method for determining the softening temperature of petroleum bitumen using a ball and ring;
15150-69, dedicated to the peculiarities of the execution of technical products depending on climatic conditions.

Assortment

The standard establishes:

an assortment of cast iron sewer pipes and fittings used in domestic sewerage;
their graphic and letter designation.

The list of fittings in the assortment includes:

pipes, including compensation pipes, transition pipes;
knees, including low knees;
bends 110°, 120°, 135° and 150°;
instrument and transition tees;
padding;
straight tees, including compensation, low, transition, low transition;
oblique tees 45° and 60°;
crosspieces:
- straight, including with a displaced axis of removal;
- oblique 45° and 60°;
- two-plane;
couplings, including sliding ones;
audits;
plugs;
cleaning

Construction types and sizes

The section shows the designs and dimensions of all assortment elements to which the document applies. In particular, pipes are produced with an internal diameter of 50, 100 and 150 mm and different lengths. For the first ones it is 750, 1000 and 2000 mm; the rest have two more standard sizes - 2100, 2200. In addition, a product with a diameter of 100 mm is produced with a length of 1250 mm.

There are 4 types of sockets installed for pipes. A device is provided for shanks that provide a hermetically sealed connection of the elements.

Shaped parts are manufactured as follows:

Connections for pipes with nominal bore:
1. 50 mm length 250, 350 and 400 mm.
2. 100-200, 250 and 350.
3. 150 — 400.
Compensation pipes. Designed for pipes with an internal diameter of 100 and 150 mm. Their thickened part has a length of 130.370 mm for the former and 130.380 for the latter. The narrowed part is the same for all - 80 mm.
Adapter pipes for connecting pipes with a diameter of 100 and 50, 150 and 100 mm.
Elbows (including low ones), bends, tee bends in right and left versions, indents, tees (straight, straight transitional, low, compensating, oblique), crosses (straight, with offset axes of the bend, oblique, two-plane). The elements allow connecting pipes of all diameters at an angle, with offset axes, at forks.
Couplings (ordinary, sliding) for coaxial joining of pipes.
Inspections, cleaning to monitor the condition, carrying out internal work during sewer operation.
Plugs for blocking exits.

Technical requirements

The standard states:

The procedure for manufacturing pipes and shaped elements, the mandatory availability of approved technological and design documentation.
Requirements for product characteristics:
1. The presence of bays, external slag layers, metal drops, and build-ups is excluded.
2. The maximum thickness of chill marks allowed is: 1 mm on external surfaces; 2 mm at the ends, on smooth areas 60 mm long.
3. The maximum deviation is set (±2 mm) from the nominal internal diameters, ±9% of the length, 7.1 g/cm³ for mass, 2 mm/l.m. for straightness.
Requirements for materials, raw materials, components.
Requirements for anti-corrosion coating of internal surfaces of products.
The need for the manufacturer to supply complete products in accordance with customer requirements.
Requirements for marking products with cast or indelible paint.
Rules for placing pipes in cassette, package, container packaging or in a bundle. The main one is the alternating arrangement of the bells in different directions.

Acceptance rules

Reception of shaped parts and pipes is carried out in batches, which are manufactured in one shift and are documented according to quality indicators in one document. Verification is carried out through acceptance and periodic testing of products.

During the acceptance check:

all products are subject to external inspection of anti-corrosion coating; 2% of them are tested for stickiness;
0.5% of the batch is assessed for compliance with other GOST requirements.

Periodic testing is carried out at least quarterly. Products that have passed the acceptance test are checked. At the same time, the softening temperature of the anti-corrosion coating and the strength of its adhesion to the metal are determined for 0.5% of products.

The section establishes:

Possibility of control testing of products by the consumer according to any noted characteristic.
Re-inspection of the batch. It is carried out according to the indicator for which a deviation from the requirements of the standard is identified. The volume of testing doubles. If a batch is rejected, each product is accepted separately.

Control methods

According to GOST, methods for monitoring manufactured products have been established. The following must be checked:

Chilling depth, dimensions of the bleached layer. Determined by a ruler or caliper on split products that were rejected based on other indicators.
The quality and appearance of the surface of products, anti-corrosion coating on them. They do this by comparing visually with the standard.
Compliance with the specified dimensions. The test is carried out in two mutually perpendicular planes using universal measuring instruments. The average of the measurements is considered to be the diameter of the products inside and outside.
Mass of products. It is determined by weighing on scales with at least second class accuracy.
Pipe non-straightness. It is carried out by placing the products on a control plate (on prismatic supports) and measuring the gap between them. The latter is determined by the height gauge.
Product tightness. This is done by installing plugs with connections for the pump and pressure gauge at all inlets and outlets. The internal volume is filled with water under a pressure of 0.1 MPa or higher, which is maintained for at least 15 seconds. Inspect the products for water leaks and fogging of external surfaces. If they are present, the products are rejected.

Transportation and storage

The standard allows for the transportation of products by any type of transport. It is imperative to comply with the transportation rules that apply to it.

During storage, which is also stipulated by state standards for external sewerage, pipes must be sorted according to conventional diameters, and fittings - according to standard sizes and assortment. Products are placed in such a way as to protect them from possible mechanical damage.

Installation and operating instructions

Installation of products must be carried out in accordance with current building codes and regulations (SNiP). In this case, technologies are used that ensure the tightness of connections and the functionality of the sewer system.

Connecting elements can be done using the following method:

caulking, in which the sockets are filled with heated sulfur or filled with tarred strands and cement;
installation of a rubber sealing collar.

manufacturer's warranty

The manufacturer guarantees that the products it produces for indoor sewage systems comply with the requirements of this standard. At the same time, the warranty period is established for them:

3 years from date of manufacture for storage;
2 years from the date of commencement of operation of the facility on which they are installed;
2 years from the date of sale, if the transaction was completed during the guaranteed storage period.

Certificate for cast iron sewer pipes

This type of product is not subject to mandatory certification. The manufacturer can obtain a certificate of conformity for it on a voluntary basis. The document has legal force and is confirmation of:

compliance of pipes and fittings with GOST 6942-98;
their high quality, which is important for the manufacturer’s status in the eyes of customers.

The procedure for obtaining a certificate does not differ from the mandatory one. Includes testing of products in a special laboratory. Based on the protocol, the certified body (in Russia this is Rosstandart) issues a document.

GOST 6942-98

INTERSTATE STANDARD

Specifications

Official publication

INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION FOR STANDARDIZATION, TECHNICAL REGULATION AND CERTIFICATION IN CONSTRUCTION (INTKS)

Preface

1 DEVELOPED by the Scientific Research Institute of Sanitary Engineering (NIIsantekhniki) of the Russian Federation

INTRODUCED by the State Construction Committee of Russia

2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on November 12, 1998.

State name	Name of the state construction management body
Republic of Armenia	Ministry of Urban Development of the Republic of Armenia
The Republic of Kazakhstan	Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan
Republic of Kyrgyzstan	State Inspectorate for Architecture and Construction under the Government of the Kyrgyz Republic
The Republic of Moldova	Ministry of Territorial Development, Construction and Communal Services of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan

3 INSTEAD OF GOST 6942.0-80 - GOST 6942.24-80, GOST 4.227-83.

4 ENTERED INTO EFFECT on January 1, 1999 as a state standard of the Russian Federation by Decree of the State Construction Committee of Russia dated December 31, 1998 No. 31.

This standard cannot be fully or partially reproduced, replicated and distributed as an official publication on the territory of the Russian Federation without permission from the Gosstroy of Russia

ISBN 5-88111-166-4 © Gosstroy of Russia, State Unitary Enterprise TsPP, 1999

1 area of use............................................... ....................................1

3 Assortment................................................... ........................................................ ..2

4 Types, designs and sizes.................................................... .......................6

5 Technical requirements........................................................ ............................36

6 Acceptance rules................................................................... .....................................38

7 Control methods................................................................... ........................................39

8 Transportation and storage................................................................... ...................41

9 Installation and operating instructions................................................................. .........42

10 Manufacturer's guarantees................................................... ...............................42

INTERSTATE STANDARD

CAST IRON SEWER PIPES AND FITTINGS FOR THEM

Specifications

CAST IRON WASTE PIPES AND FITTINGS Specifications

Date of introduction 1999-01-01

1 area of use

This standard applies to cast iron sewer pipes and fittings for them intended for internal sewage systems of buildings.

Mandatory requirements for product quality are set out in: 5.1; 5.2.2 - 5.2.4; 5.2.7; 5.2.8; 5.3.1; 5.3.2.

2 Normative references

GOST 164-90 Height gauges. Specifications

GOST 166-89 Calipers. Specifications

GOST 1412-85 Cast iron with flake graphite for castings. Stamps

GOST 9812-74 Petroleum insulating bitumens. Specifications

GOST 11506-73 Petroleum bitumens. Method for determining the softening temperature by ring and ball

GOST 15150-69 Machines, instruments and other technical products. Versions for different climatic regions. Categories, operating, storage and transportation conditions regarding the impact of environmental climatic factors

Official publication

GOST 18510-87 Writing paper. Technical specifications GOST 26358-84 Iron castings. General technical conditions GOST 26598-85 Containers and packaging means in construction. General technical conditions

GOST 26645-85 Castings from metals and alloys. Dimensional, mass and machining allowances.

3 Assortment

3.1 The range of pipes and fittings must correspond to those indicated in Table 1.

Table 1

Name	Conditional diameters, mm	Symbol
Name		graphic	alphabetic

Pipes
Pipes compensatory
Pipes compensatory
Transition pipes

Name	Conditional diameters, mm	Symbol
Name		graphic	alphabetic
Low knees
Bends 110° and 120°			About 110°"/>y or

Bends 135°


Bends 150°



Tee bends			OTPr-100x50 or
instrumentation			LOTPr-100x50



Straight tees

Continuation of Table I

Name	Conditional diameters, mm	Symbol
Name		graphic	alphabetic
Straight compensation tees			TPK-D y X d y
Straight low tees
Straight low tees
Straight transition tees			TPR-100/50x100
Straight transitional low tees			TP PH-100/50x100
Tees oblique 45° and 60°			TK45°-D X d and TK6o°-i» y x d y
Crosspieces are straight			KP-£) y x d y
Crosspieces are straight with an offset axis of removal			KPS-D y X d y

Name	Conditional diameters, mm	Symbol
Name		graphic	alphabetic
Crosses oblique 45° and 60°			KK45°-Dd and KK60 °-D y d y
Crosspieces two-plane			KD-Lxdxd LKD-G>y x<1 у х

Sliding couplings

Stub
Tee bends transitional
Cleaning

4 Types, designs and sizes

4.1 Pipes

4.1.1 The design and dimensions of the pipes must correspond to those indicated in Figure 1 and Table 2.

It is allowed, by agreement between the consumer and the manufacturer, to manufacture pipes without sockets and supply them complete with MF couplings. The length of such pipes may differ from that indicated in the table.

An example of a symbol for a cast iron sewer pipe D y = 100 mm, L = 2000 mm:

ТЧК-100-2000 GOST 6942-98

Nominal diameter D y	Construction length L

Nominal diameter D y	Construction length L

4.2 Sockets and shanks of fittings

4.2.1 Sockets of fittings are made of four types: I, II, III, IV.

4.2.2 The design and dimensions of type I sockets must correspond to those indicated in Figure 2 and Table 3, type II - in Figure 3 and Table 4, type III - in Figure 4 and type IV - in Figure 5. Dimensions are given without taking into account the anti-corrosion coating . The option of manufacturing sockets of types I, I, IV without an annular groove on the inner surface of the sockets is allowed.

Table3 In millimeters

Nominal diameter D y

*Dimensions for reference

Figure 3

Table 4 In millimeters

Figure 4

*Dimensions for reference

Figure 5

4.2.3 The design and dimensions of the shanks of the fittings must correspond to those indicated in the figure and table 5.

Table 5 In millimeters

4.3 Connections

4.3.1 The design and dimensions of the nozzles must correspond to those indicated in Figure 7 and Table 6.

An example of a pipe designation D y = 100 mm, L - 250 mm;

1 P-100-250 GOST 6942-98 2

1 - type I socket; 2 - shank Figure 7

Table 6 Dimensions in millimeters

4.4 Compensation pipes

4.4.1 The design and dimensions of the expansion pipes must correspond to those shown in Figure 8 and Table 7.

An example of a symbol for a compensation pipe D y = 100 mm:

PK-100 GOST 6942-98/2

Figure 8

Table 7 Dimensions in millimeters

4.5 Transition pipes

4.5.1 The design and dimensions of the transition pipes must correspond to those indicated in Figure 9 and Table 8.

An example of a designation for a transition pipe D = 50 mm and D y = 100 mm: y1

PP-50/100 GOST 6942-98 1 2

Figure 9

Table 8

4.6 Knees

4.6.1 The design and dimensions of the elbows must correspond to those shown in Figure 10 and Table 9.

An example of a designation for an elbow D = 100 mm;

K-100 GOST 6942-98

a = 92° 30"±1°30"; J - type I bell; 2 - shank

Figure 10

Table 9 Dimensions in millimeters

4.7 Low knees

4.7.1 The design and dimensions of the low elbows must correspond to those shown in Figure 11. The weight of the low elbow is 3.4 kg. Symbol for low knee:

KN-100 GOST 6942-98

1 - type IV bell; 2 - shank Figure 11

4.8 Bends 110° and 120°

4.8.1 The design and dimensions of the bends must correspond to those indicated in Figure 12 and in Tables 10 and 11.

An example of a symbol for a bend with a = 120° and D y = 50 mm:

О 120°-50 GOST 6942-98

The same, with a = 150° and D y = 100D (extended) mm:

O 150°- 100D GOST 6942-98

/ - socket type 1,2 - shank Figure 12

Table 10

Dimensions in millimeters

Table 11 Dimensions in millimeters

4.9 Instrument tees

4.9.1 Instrument tees are manufactured in two versions: right and left.

4.9.2 The design and dimensions of instrument tee bends must correspond to those shown in Figure 13. The mass of the tee bend is 7.0 kg.

Symbol of the instrument tee-bend in the right version:

OTPr GOST 6942-98 The same, in the left version:

LOTPr GOST 6942-98

I - socket type 1, 2 - socket type III, 3 - shank

Figure 13

4.10 Indents

4.10Л The design and dimensions of the indents must correspond to those indicated in Figure 14 and Table 12.

An example of a symbol for the indentation D y = 100 mm:

OTS-YuO GOST 6942-98

I - type I bell; 2 - shank

Figure 14

Table 12 Dimensions in millimeters

4.11.1 The design and dimensions of straight tees must correspond to those indicated in Figure 15 and Table 13.

An example of a symbol for a straight tee D y = 50 mm and d y = 50 mm:

TP-50x50 GOST 6942-98 The same, long, Z) = 100 mm and d y = 100D mm:

TP-100x100D GOST 6942-98

Table 13 Dimensions in millimeters

Conditional pass					Weight, kg
					Weight, kg

4.12 Direct compensation tees

4.12.1 The design and dimensions of direct compensation tees must correspond to those indicated in Figure 16 and Table 14.

An example of the designation of a direct compensation tee D = 100 mm, d = 50 mm:

TPK-100x50 GOST 6942-98

1 - type II socket; 2 - type I bell; 3 - shank

Figure 16

Table 14

Dimensions in millimeters

4.13 Straight low tees

4.13.1 The design and dimensions of straight low tees must correspond to those shown in Figure 17. The weight of the tee is 5.8 kg.

Symbol for straight low tee:

TN- 100x100 GOST 6942-98

4.14.1 The design and dimensions of straight transition tees must correspond to those shown in Figure 18. The weight of the tee is 6.8 kg.

Designation of a straight transition tee:

TPR-100/50x100 GOST 6942-98

Figure 18

4.15.1 The design and dimensions of straight transition low tees must correspond to those shown in Figure 19. The weight of the tee is 4.7 kg.

Symbol of straight transition low tee: TPRN-100/50x100 GOST 6942-98

4.16 Oblique tees

4.16.1 The design and dimensions of oblique tees must correspond to those indicated in Figure 20 and Table 15.

An example of a symbol for an oblique tee with a = 45°, D y = 100 mm and d y ~ 50 mm:

TK 45°-100x50 GOST 6942-98

The same, with 60°, D y = 150 mm and d = 100 mm:

TK 60°-150x100 GOST 6942-98

Table 15 Dimensions in millimeters

Conditional pass					Weight, kg
					Weight, kg

4.17.1 The design and dimensions of straight crosses must correspond to those indicated in Figure 21 and Table 16.

An example of a symbol for a straight cross with D = 100 mm and d = 50 mm:

U KP-100x50 GOST 6942-98

Figure 21

Table 16 Dimensions in millimeters

4.18.1 The design and dimensions of straight crosses with an offset axis of the outlet must correspond to those shown in Figure 22. The weight of the tee is 7.6 kg.

Symbol for a straight cross with an offset axis of removal:

KPS-100x50 GOST 6942-98

Figure 22

4.19 Oblique crosses

4.19.1 The design and dimensions of the oblique crosses must correspond to those indicated in Figure 23 and Table 17.

An example of a symbol for an oblique cross with a = 45°, D y = 100 mm and d y = 100 mm:

KK45°-100x100 GOST 6942-98

The same, with a = 60°, D y - 150 mm and d y = 50 mm:

KK 60° -150x50 GOST 6942-98 1

Table 17 Dimensions in millimeters

Conditional pass
					Weight, kg
					Weight, kg

4.20 Two-plane crosspieces

4.20.1 Two-plane crosspieces are manufactured in two versions: right and left.

4.20.2 The design and dimensions of two-plane crosses must correspond to those indicated in Figure 24 and Table 18.

An example of a symbol for a two-plane cross Z> y - 150 mm in the right version:

KD-150x100x50 GOST 6942-98

The same, in the left version:

L KD-150x100x50 GOST 6942-98

a = 87 o 30"±1°30"; 1 - type 1 bell; 2 - type III bell; 3 - shank

Figure 24

Table 18 Dimensions in millimeters

4.21 Couplings

4.21.1 The design and dimensions of the couplings must correspond to those shown in Figure 25 and Table 19.

Example of a designation for a coupling Z) y = 100 mm:

Mf-100 GOST 6942-98 7 1

Table 19

4.22 Sliding couplings

4.22.1 The design and dimensions of push-in couplings must correspond to those indicated in Figure 26 and Table 20.

An example of a symbol for a sliding coupling D y =100 mm:

MfN-100 GOST 6942-98

! / / ;■ , 7-7-7

1 - type II socket Figure 26

Table 20 Dimensions in millimeters

4.23 Revision

4.23.1 The design and dimensions of the revisions must correspond to those indicated in Figure 27 and Table 21.

An example of a revision symbol Z> y =100 mm:

R-100 GOST 6942-98

4.23.2 It is allowed to place the bolts in plane A-A and make cover 2 from steel.

1 - type I socket; 2 - cover; 3 - gasket; 4 - body; 5 - shank; 6 -

screw; 7 - bolt

Figure 27

Table 21

Dimensions in millimeters

4.24 Plugs

4.24.1 The design and dimensions of the plugs must correspond to those indicated in Figure 28 and Table 22.

An example of a designation for a plug D y =100 mm:

3-100 GOST 6942-98

4.24.2 It is allowed to place the bolts in the BB plane and make the cover 3 from steel.

1 - bolt; 2 - nut; 3 - cover; 4 - gasket; 5 - body; 6 - shank

Table 22

Dimensions in millimeters

Troche bends

n transitional

4.25.1 The design and dimensions of transition tees must correspond to those shown in Figure 29. The mass of the transition tees is 7.8 kg.

An example of a symbol for a transition tee:

OTP- 100x50 GOST 6942-98

1 - type I socket; 2 - shank Figure 29

4.26 Cleaning

4.26.1 The design and dimensions of the clearings must correspond to those indicated in Figure 30 and Table 23.

An example of a symbol for cleaning:

Pr-100 GOST 6942-98

4.26.2 Cleaners must be supplied complete with all parts indicated in the figure and assembled.

1 - type I socket; 2 - nut; 3 - bolt; 4 - cover; 5 - gasket;

6 - body; 7 - shank

Figure 30

Table 23 Dimensions in millimeters

4.27 Dimensions and weight are given without taking into account the anti-corrosion coating.

5 Technical requirements

5.1 Cast iron sewer pipes and fittings for them should be manufactured in accordance with the requirements of this standard, according to design and technological documentation approved in the prescribed manner.

5.2 Characteristics

5.2.1 Pipes and fittings for them must not have defects that impair their installation and operational qualities: spills, build-ups, drops of metal, slag deposits on the outer and inner surfaces. It is allowed to eliminate minor defects caused by the production method and which do not impair the quality of the products.

5.2.2 Pipes and fittings for them must not have a chill over the entire outer surface with a depth of more than 1 mm, and at the ends and outer surface of the smooth ends of pipes at a length of 60 mm from the end and in places where molds are separated on fittings - with a depth of more than 2 mm.

5.2.3 Deviations from the nominal dimensions of the internal diameters of the sockets of pipes and fittings and the outer diameters of the smooth ends of pipes and tails of fittings (before applying an anti-corrosion coating to the product) should not exceed ±2 mm. Deviations from the dimensions of construction lengths in products of all types and diameters should not exceed ± 0.9%.

5.2.4 It is allowed to thicken by no more than 2 mm the walls of the smooth ends of pipes in a section up to 150 mm long and the shanks of fittings in a section up to 70 mm long from their ends with a corresponding reduction in the internal diameters of the products in these places, as well as rounding on the outside the ends of the smooth ends of pipes and the shanks of fittings.

5.2.5 Maximum deviations from the nominal dimensions of castings of products, with the exception of those regulated in 3.2.3 and 3.2.4, must correspond to the 11t accuracy class according to GOST 26645.

5.2.6 Deviations from the calculated values of the masses of products established in the design standards, and the dimensions of these products (for the calculation of which the density of cast iron is taken to be 7.1 g/cm3) must correspond to the 11 t accuracy class according to GOST 26645.

Castings whose weight exceeds the maximum are considered acceptable provided that in all other quality characteristics they comply with this standard.

5.2.7 Deviations from straightness of pipes D y 100 and D y 150 mm should not exceed 2 mm per 1 m length, and for pipes D y 50 mm - 5 mm per 1 m length.

5.2.8 Pipes and fittings assemblies, after applying an anti-corrosion coating to their internal and external surfaces and sealing the sockets, must withstand a hydraulic pressure of at least 0.1 MPa (1.0 kgf/cm2).

5.3 Requirements for raw materials, materials and components

5.3.1 Pipes and fittings for them must be made of gray cast iron with flake graphite in accordance with GOST 1412 and in accordance with the requirements for castings in accordance with GOST 26358.

5.3.2 The outer and inner surfaces of pipes and fittings must be coated with an anti-corrosion composition based on bitumen grade BNI 1U-3 according to GOST 9812 or other compositions that ensure the softening temperature of the anti-corrosion coating is not lower than 333 K (60 ° C) and operating conditions UHL 4 GOST 15150.

The anti-corrosion coating must be continuous, durable, smooth, without cracks or bubbles, firmly adhered to the metal of the product and should not be sticky.

On the surface of the pipe coating, ring marks from supports for rolling pipes are allowed, and on the surface of the coating of fittings - traces from the hooks of chain conveyor hangers, as well as drips caused by the runoff of the anti-corrosion compound from pipes and fittings, or discontinuities in the coating.

5.4 Completeness

5.4.1 The manufacturer must complete pipes and fittings for delivery in an assortment determined by the customer’s order.

5.5 Labeling and packaging

5.5.1 Pipes and fittings must have markings cast or applied with indelible paint on the end or image

surface of the bell or directly behind the bell and including:

Trademark of the manufacturer;

Product designation;

Designation of this standard.

5.5.2 Pipes are packaged in containers, bags, cassettes or bundles tied with wire.

When packing, pipes are laid with sockets alternately in opposite directions. Shaped parts are placed on box pallets or containers in accordance with GOST 26598, and the carrying capacity of the container must be fully used.

6 Acceptance rules

6.1 Pipes and fittings are accepted in batches. A batch is considered to be the number of pipes and fittings manufactured during one shift and documented with one quality document.

6.2 To check the compliance of pipes and fittings with the requirements of this standard, the manufacturer carries out acceptance and periodic tests of products.

6.3 During acceptance tests, products are checked for compliance with the requirements:

5.2.2 - 0.5% of products from the batch;

5.2.1 and 5.3.2 regarding the appearance of the anti-corrosion coating - 100% of the products in the batch;

5.2.3 - 5.2.8, 5.3.2 in terms of the stickiness of the anti-corrosion coating - at least 2% of products from the batch.

6.4 Periodic tests are carried out at least once a quarter.

6.5 Products that have passed acceptance tests are subject to periodic testing.

6.6 During periodic testing, products are checked for compliance with the requirements of 5.2.3; 5.5.1 and 5.3.2 in terms of determining the softening temperature of the anti-corrosion coating and its adhesion strength to metal in the amount of 0.5% of products from the batch.

6.7 The consumer has the right to carry out a control check of pipes and fittings according to any quality indicator, observing

the procedure for selecting products given in 6.3; 6.6, and applying the control methods specified in section 7.

6.8 If, during inspection, at least one product does not meet the requirements of this standard for any indicator, then a double number of products from that batch are re-tested for this indicator.

If the results of the re-inspection are unsatisfactory, the batch of products is rejected or the products are accepted piece by piece and the indicators for which unsatisfactory results were obtained during the re-inspection are checked.

7 Control methods

7.1 The depth of bleaching and the dimensions of the bleached layer (5.2.2) are checked on products rejected for other indicators by splitting them and measuring the depth and dimensions of the bleached layer with a ruler or caliper according to GOST 166.

7.2 The appearance and quality of product surfaces (5.2.1) and the appearance of the anti-corrosion coating of products (5.3.2) are checked visually without the use of magnifying devices by comparing the product being tested with the standard.

7.3 Deviations from the dimensions of pipes and fittings (5.2.3 - 5.2.5) are checked using universal measuring instruments that provide the necessary measurement accuracy. Measurements are carried out in two mutually perpendicular directions. The arithmetic mean of the results of two measurements is considered the outer (inner) diameter. In this case, the result of each measurement must be within the permissible deviations.

7.4 Checking the mass of products and deviations from it (5.2.6) is carried out by weighing the products on scales with an accuracy class of no rougher than 2.

7.5 Determination of the presence and value of pipes (5.2.7)

and non-linear

7.5.1 Equipment and tools:

Height gauge according to GOST 164;

Control horizontal plate;

Two steel prismatic supports of the same height.

7.5.2 Carrying out the test

Two prismatic supports are installed parallel to each other at a distance from each other of more than half the length of the pipe being tested on the control plate and the pipe is laid on them with the deflection downwards. Using a height gauge, the distance from the surface of the slab to the bottom point of the pipe at the point of its greatest deflection is measured with an accuracy of 0.1 mm.

7.5.3 Calculation of test results

The deviation from straightness of the pipe per 1 m of its length A is calculated using the formula

where a is the height of the support, mm;

b - distance from the horizontal surface of the slab to the bottom point of the pipe, mm;

I - distance between prismatic supports, m.

7.6 The softening temperature of the anti-corrosion coating (5.3.2) is checked according to GOST 11506.

7.7 The adhesion strength of the anti-corrosion coating to the metal of the product (5.3.2) is checked by making grid-shaped cuts on the coating with a knife blade with distances between cut lines of at least 40 mm.

The adhesion of the coating is considered strong if the coating does not peel off when making cuts.

7.8 The stickiness of the anti-corrosion coating (5.3.2) is checked at an ambient temperature of 15 to 30 °C by lightly pressing a clean sheet of writing paper to the product coating according to GOST 18510.

A coating is considered non-tacky if, after removing the paper, no traces of the coating remain on it.

The stickiness of the coating is checked no earlier than 24 hours after applying it to the product.

7.9 Checking the tightness of pipes and fittings (5.2.8)

7.9.1 Devices, materials and equipment:

A stand equipped with a pressure gauge with a division value not coarser than 0.01 MPa (0.1 kgf/cm 2);

A pump creating a hydraulic pressure of 0.2 MPa (2 kgf/cm2);

Plugs (blind and with pipes).

7.9.2 Carrying out the test

The assembled pipes and fittings are placed on the stand, and a plug with a pipe for connection to the pump is installed on the hole closest to the pump, and a plug with a pipe for draining water is installed on the other hole. If there are other holes, then blind plugs are installed on them. Using a pump, the tested section of the pipeline is filled with water, the water drainage pipe is closed with a valve or other shut-off device, and a pressure of at least 0.1 MPa (1.0 kgf/cm2) is created in it. This pressure is maintained for at least 15 s, during which the connections of the pipeline section are inspected.

7.9.3 Test results

A section of the pipeline is considered sealed if, upon inspection, no water leaks through its walls or socket joints, or fogging of the outer surfaces of pipes and fittings is detected.

8 Transportation and storage

8.1 Pipes and fittings are transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport.

8.2 Pipes should be stored sorted by nominal diameters, fittings - by types and sizes in conditions that exclude the possibility of mechanical damage to the products.

9 Installation and operating instructions

9.1 Installation of pipes and fittings must be carried out using technology that ensures their operability and tightness of connections, in accordance with building codes and regulations.

9.2 Pipes and fittings can be connected to each other by caulking the sockets with tarred strands and cement or by pouring heated sulfur, as well as using a rubber sealing collar.

10 Manufacturer's warranty

10.1 The manufacturer guarantees that pipes and fittings for them comply with the requirements of this standard, subject to the rules of transportation, storage, installation and operation.

10.2 Guaranteed shelf life - 3 years from the date of manufacture.

Warranty period of operation - 2 years from the date of commissioning of the facility

operation or sale within the warranty period of storage.

UDC 696.133:669.13:006.354 OKS 91.140.70 Zh21 OKSTU 4925

Key words: cast iron sewer pipes, fittings, internal sewage system of buildings

Interstate standard

CAST IRON SEWER PIPES AND FITTINGS FOR THEM

Specifications

GOST 6942-98

Head ed. dept. L, F. Zavidonskaya Editor L.N. Kuzmina Technical editor L.Ya. Head Corrector M.E. Shabalina, I.N. Gracheva Computer layout EL. Prokofiev

GOST 6942-98

UDC 696.133:669.13:006.354 Group Zh21

INTERSTATE STANDARD

CAST IRON SEWER PIPES AND

FITTINGS FOR THEM

Specifications

CAST IRON WASTE PIPES AND FITTINGS

OKSTU 4925 OKS 91.140.70

Date of introduction 1999-01-01

Preface

1 DEVELOPED by the Scientific Research Institute of Sanitary Engineering (NIIsantekhniki) of the Russian Federation

INTRODUCED by the State Construction Committee of Russia

2 ADOPTED by the Interstate Scientific and Technical Commission for Standardization, Technical Regulation and Certification in Construction (MNTKS) on November 12, 1998.

State name	Name of the state construction management body
Republic of Armenia	Ministry of Urban Development of the Republic of Armenia
The Republic of Kazakhstan	Committee on Housing and Construction Policy under the Ministry of Energy, Industry and Trade of the Republic of Kazakhstan
Republic of Kyrgyzstan	State Inspectorate for Architecture and Construction under the Government of the Kyrgyz Republic
The Republic of Moldova	Ministry of Territorial Development, Construction and Communal Services of the Republic of Moldova
Russian Federation	Gosstroy of Russia
The Republic of Tajikistan	State Construction Committee of the Republic of Tajikistan

3 INSTEAD OF GOST 6942.0-80 - GOST 6942.24-80, GOST 4.227-83.

4 ENTERED INTO EFFECT on January 1, 1999 as a state standard of the Russian Federation by Decree of the State Construction Committee of Russia dated December 31, 1998 No. 31.

1 area of use

This standard applies to cast iron sewer pipes and fittings for them intended for internal sewage systems of buildings.

Mandatory requirements for product quality are set out in: 5.1; 5.2.2 - 5.2.4; 5.2.7; 5.2.8; 5.3.1; 5.3.2.

GOST 164-90 Height gauges. Specifications

GOST 166-89 Calipers. Specifications

GOST 1412-85 Cast iron with flake graphite for castings. Stamps

GOST 9812-74 Petroleum insulating bitumens. Specifications

GOST 18510-87 Writing paper. Specifications

GOST 26358-84 Iron castings. General technical conditions

GOST 26598-85 Containers and packaging means in construction. General technical conditions

GOST 26645-85 Castings from metals and alloys. Dimensional, mass and machining allowances.

3 Assortment

3.1 The range of pipes and fittings must correspond to those indicated in Table 1.

Table 1

Name	Conditional diameters, mm	Symbol
		graphic	alphabetic

Pipes
Compensation pipes
Transition pipes			PP-D 1 x D y

Low knees
Bends 110° and 120°			About 110°-D or
Bends 135°
Bends 150°
Instrument tee bends			OTPr-100x50 or LOTPr-100x50

Straight tees			TP-D y x d y
Straight compensation tees			TPK-D y x d y
Straight low tees
Straight transition tees			TPR-100/50x100
Straight transitional low tees			TPRN-100/50x100
Tees oblique 45° and 60°			TK45°-D y x d y and TK60°-D y x d y
Crosspieces are straight			KP-D y x d y
Crosspieces are straight with an offset axis of removal			KPS-D y x d y
Crosses oblique 45° and 60°			KK45°-D y x d y and KK60°-D y x d y
Two-plane crosspieces			KD-D y x d y x d y LKD-D y x d y x d y

Sliding couplings

Stub
Transitional tees
Cleaning

4 Types, designs and sizes

4.1.1 The design and dimensions of the pipes must correspond to those indicated in Figure 1 and Table 2.

An example of a symbol for a cast iron sewer pipe D y = 100 mm, L = 2000 mm:

ТЧК-100-2000 GOST 6942-98

Picture 1

Table 2 Dimensions in millimeters

Conditional diameter D

Construction length L

Weight, kg

4.2 Sockets and shanks of fittings

4.2.1 Sockets of fittings are made of four types: I, II, III, IV.

4.2.2 The design and dimensions of type I sockets must correspond to those indicated in Figure 2 and Table 3, type II - in Figure 3 and Table 4, type III - in Figure 4 and type IV - in Figure 5. Dimensions are given without taking into account the anti-corrosion coating . The option of manufacturing sockets of types I, II, IV without an annular groove on the inner surface of the sockets is allowed.

*Dimensions for reference

Figure 2

Table 3 In millimeters

Conditional diameter D										l min.

*Dimensions for reference

Figure 3

Table 4 In millimeters

Nominal diameter D y

Figure 4

*Dimensions for reference

Figure 5

4.2.3 The design and dimensions of the shanks of the fittings must correspond to those indicated in Figure 6 and Table 5.

Figure 6

Table 5 In millimeters

Conditional diameter D

4.3 Connections

4.3.1 The design and dimensions of the nozzles must correspond to those indicated in Figure 7 and Table 6.

An example of a pipe designation D y = 100 mm, L = 250 mm;

P-100-250 GOST 6942-98

Figure 7

1 - type I socket; 2 - shank

Table 6 Dimensions in millimeters

Conditional diameter Dу	Construction length L	Weight, kg

4.4 Compensation pipes

4.4.1 The design and dimensions of the expansion pipes must correspond to those shown in Figure 8 and Table 7.

An example of a symbol for a compensation pipe D y = 100 mm:

PK-100 GOST 6942-98

1 - type II socket; 2 - shank

GOST 6942-98

INTERSTATE STANDARD

CAST IRON SEWER PIPES

AND FITTINGS FOR THEM

Specifications

INTERSTATE SCIENTIFIC AND TECHNICAL COMMISSION

ON STANDARDIZATION, TECHNICAL REGULATION

AND CERTIFICATIONS IN CONSTRUCTION

(MNTKS)

2 Normative references

This standard uses references to the following standards:

An example of a symbol for a cast iron sewer pipeDy = 100 mm, L = 2000 mm:

ТЧК-100-2000 GOST 6942-98

Table 4

In millimeters

Conditional pass Dy								l min.

An example of a symbol for a branch witha = 120° and Dy = 50mm:

О 120°-50 GOST 6942-98

Same with a = 150° and Dat = 100D (extended) mm:

O 150°-100D GOST 6942-98

1 - type I bell, 2 - shank

Table 17

Dimensions in millimeters

Conditional pass					Weight, kg
					Weight, kg
At a = 45° ± 1° 30"



At a = 60° ± l° 30"

4.20 Two-plane crosspieces

4.20.1 Two-plane crosspieces are manufactured in two versions: right and left.

4.20.2 The design and dimensions of two-plane crosses must correspond to those indicated on and in Table 18.

An example of a symbol for a two-plane crossDat = 150 mm right-hand version:

KD-150 ´ 100 ´ 50 GOST 6942-98

The same, in the left version:

LKD-150 ´ 100 ´ 50 GOST 6942-98

a = 87° 30" ± 1° 30"; 1 - Type I bell; 2 - Type III bell; 3 - shank

Castings whose weight exceeds the maximum are considered acceptable provided that in all other quality characteristics they comply with this standard.

The anti-corrosion coating must be continuous, durable, smooth, without cracks or bubbles, firmly adhered to the metal of the product and should not be sticky.

5.4 Completeness

5.4.1 The manufacturer must complete pipes and fittings for delivery in an assortment determined by the customer’s order.

5.5 Labeling and packaging

Trademark of the manufacturer;

Product designation;

Designation of this standard.

5.5.2 Pipes are packaged in containers, bags, cassettes or bundles tied with wire.

When packing, pipes are laid with sockets alternately in opposite directions. Shaped parts are placed on box pallets or containers in accordance with GOST 26598 - 6.3; , and applying the control methods specified in.

6.8. If, during inspection, at least one product does not meet the requirements of this standard for any indicator, then a double number of products from that batch are re-tested for this indicator.

7 Control methods

7.1 The depth of bleaching and the dimensions of the bleached layer () are checked on products rejected for other indicators by splitting them and measuring the depth and dimensions of the bleached layer with a ruler or caliper according to GOST 166.

7.2 The appearance and quality of product surfaces () and the appearance of the anti-corrosion coating of products () are checked visually without the use of magnifying devices by comparing the product being tested with the standard.

7.3 Deviations from the dimensions of pipes and fittings ( - ) are checked using universal measuring instruments that provide the necessary measurement accuracy. Measurements are carried out in two mutually perpendicular directions. The arithmetic mean of the results of two measurements is considered the outer (inner) diameter. In this case, the result of each measurement must be within the permissible deviations.

7.4 Checking the mass of products and deviations from it () is carried out by weighing the products on scales with an accuracy class of no rougher than 2.

7.5 Determination of the presence and value of pipe non-straightness ()

7.5.1 Equipment and tools:

Control horizontal plate;

Two steel prismatic supports of the same height.

7.5.2 Carrying out the test

7.5.3 Calculation of test results

The value of the deviation from straightness of the pipe per 1 m of its lengthDcalculated using the formula

where a is the height of the support, mm;

b - distance from the horizontal surface of the slab to the bottom point of the pipe, mm;

l - distance between prismatic supports, m.

7.6 The softening temperature of the anti-corrosion coating () is checked according to GOST 11506.

7.7 The adhesion strength of the anti-corrosion coating to the metal of the product () is checked by making cuts in the form of a grid on the coating with a knife blade with distances between the cut lines of at least 40 mm.

The adhesion of the coating is considered strong if the coating does not peel off when making cuts.

7.8 The stickiness of the anti-corrosion coating () is checked at an ambient temperature of 15 to 30 ° C by lightly pressing a clean sheet of writing paper to the coating of the product in accordance with GOST 18510.

A coating is considered non-tacky if, after removing the paper, no traces of the coating remain on it.

The stickiness of the coating is checked no earlier than 24 hours after applying it to the product.

7.9 Checking the tightness of pipes and fittings ( )

7.9.1 Devices, materials and equipment:

A stand equipped with a pressure gauge with a division value not coarser than 0.01 MPa (0.1 kgf/cm 2);

A pump creating a hydraulic pressure of 0.2 MPa (2 kgf/cm2);

Plugs (blind and with pipes).

7.9.2 Carrying out the test

7.9.3 Test results

A section of the pipeline is considered sealed if, upon inspection, no water leaks through its walls or socket joints, or fogging of the outer surfaces of pipes and fittings is detected.

8 Transportation and storage

8.1 Pipes and fittings are transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport.

8.2 Pipes should be stored sorted by nominal diameters, fittings - by types and sizes in conditions that exclude the possibility of mechanical damage to the products.

9 Installation and operating instructions

9.1 Installation of pipes and fittings must be carried out using technology that ensures their operability and tightness of connections, in accordance with building codes and regulations.

9.2 Pipes and fittings can be connected to each other by caulking the sockets with tarred strands and cement or by pouring heated sulfur, as well as using a rubber sealing collar.

10 Manufacturer's warranty

10.1 The manufacturer guarantees that pipes and fittings for them comply with the requirements of this standard, subject to the rules of transportation, storage, installation and operation.

10.2 Guaranteed shelf life - 3 years from the date of manufacture.

The warranty period is 2 years from the date of commissioning or sale within the warranty storage period.

Keywords:Cast iron sewer pipes, fittings, internal sewerage systems for buildings

1. ASSORTMENT

D 2

R

2. TECHNICAL REQUIREMENTS

APPLICATION

The ratio of non-destructive hydraulic pressure under low-cycle loading R c, norms of test hydraulic pressure R n and calculated hydraulic pressure in the pipeline R for pipes of various classes and diameters

GOST 6942 98: cast iron sewer pipes and fittings for them

Application area

Normative references

Assortment

Construction types and sizes

Technical requirements

Acceptance rules

Control methods

Transportation and storage

Installation and operating instructions

manufacturer's warranty

Certificate for cast iron sewer pipes

Specifications

1 area of ​​use

2 Normative references

3 Assortment

4 Types, designs and sizes

4.1 Pipes

4.2 Sockets and shanks of fittings

4.3 Connections

4.4 Compensation pipes

4.5 Transition pipes

4.6 Knees

4.7 Low knees

4.8 Bends 110° and 120°

4.9 Instrument tees

4.10 Indents

4.12 Direct compensation tees

4.13 Straight low tees

4.16 Oblique tees

4.19 Oblique crosses

4.20 Two-plane crosspieces

4.21 Couplings

4.22 Sliding couplings

4.23 Revision

4.24 Plugs

4.26 Cleaning

5 Technical requirements

5.2 Characteristics

5.3 Requirements for raw materials, materials and components

5.4 Completeness

5.5 Labeling and packaging

6 Acceptance rules

7 Control methods

7.5 Determination of the presence and value of pipes (5.2.7)

and non-linear

7.5.2 Carrying out the test

7.5.3 Calculation of test results

7.9 Checking the tightness of pipes and fittings (5.2.8)

7.9.2 Carrying out the test

7.9.3 Test results

8 Transportation and storage

9 Installation and operating instructions

10 Manufacturer's warranty

2 Normative references

Table 4

Table 17

LKD-150 ´ 100 ´ 50 GOST 6942-98

7 Control methods

8 Transportation and storage

9 Installation and operating instructions

10 Manufacturer's warranty

1 area of use