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

Resolution State Committee standards of the Council of Ministers of the USSR dated 08.08.75 No. 2105, the date of introduction has been 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, aircraft class:

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.

Sold individually. The price is for 1 piece.

Submitted cast iron pipe with DN 100 made in accordance with GOST 6942-98, which means that all stated requirements are guaranteed to be met specifications. Cast iron pipe DN 100 mm is designed for drainage of toilet drains. The length of the pipe is 2 m. A smaller diameter of sewer pipes is used for sinks, sinks and washbasins.
The expansion at the end of the pipe - the bell - has an important functional purpose. With the help of such an extension, convenient and reliable installation of a sewer or water supply line is ensured. A section of one pipe is “caulked” into the socket of another and the joint is sealed with tow or other suitable material. During diameter transitions, as well as turns and branches of the pipe system, the connection of individual pipeline elements is ensured by cast iron pipe fittings - tees, bends, elbows, branch pipes, etc. Cast iron fittings are selected to fit the pipe, and the process of connecting them is similar to that described above.

Cast iron pipes are intended for sewer and fecal drainage systems in public, industrial, and residential buildings.

Specifications:

Characteristics

Delivery

In-store purchases are delivered total cost of which is more than 2000 rub. ( excluding delivery, for individuals). Minimum order amount for Legal entities 5000 rub.

Express order for buyers from regions: If you pay for your purchase on the day of your order, we will immediately send the order to the selected shopping center (check with the manager for details).

For pickup, you can place an order of any value.

Delivery within Moscow (within the Moscow Ring Road):

• delivery of KAISER mixers - 300 rub
• delivery of VIKO mixers - 500 rub
• delivery other goods -500 rub

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) 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 body government controlled construction
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 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

GOST 18510-87 Writing paper. Specifications

GOST 26358-84 Iron castings. Are common technical specifications

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

GOST 26645-85 Castings from metals and alloys. Tolerances of dimensions, weights and allowances for mechanical processing.

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
Tees straight low
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.

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.

Example symbol cast iron sewer pipes 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:

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 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
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.

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

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.

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 () 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.

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 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 that creates a hydraulic pressure of 0.2 MPa (2 kgf/cm 2);

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 or sale within warranty period storage

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

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

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 systems sewerage.

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:

1. Connections for pipes with nominal bore:
   1. 50 mm length 250, 350 and 400 mm.
   2. 100-200, 250 and 350.
   3. 150 — 400.
2. 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.
3. Adapter pipes for connecting pipes with a diameter of 100 and 50, 150 and 100 mm.
4. 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.
5. Couplings (ordinary, sliding) for coaxial joining of pipes.
6. Inspections, cleaning to monitor the condition, carrying out internal work during sewer operation.
7. Plugs for blocking exits.

Technical requirements

The standard states:

1. The procedure for manufacturing pipes and shaped elements, the mandatory availability of approved technological and design documentation.
2. 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.
3. Requirements for materials, raw materials, components.
4. Requirements for anti-corrosion coating of internal surfaces of products.
5. The need for the manufacturer to supply complete products in accordance with customer requirements.
6. Requirements for marking products with cast or indelible paint.
7. 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:

1. Possibility of control testing of products by the consumer according to any noted characteristic.
2. 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. Mandatory verification subject to:

1. Chilling depth, dimensions of the bleached layer. Determined by a ruler or caliper on split products that were rejected based on other indicators.
2. Quality and appearance surfaces of products, anti-corrosion coating on them. They do this by comparing visually with the standard.
3. 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.
4. Weight of products. It is determined by weighing on scales with at least second class accuracy.
5. 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.
6. 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, as provided and state standards for external sewerage, pipes must be sorted by nominal diameters, and fittings - by 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.