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GOST 8694-75

GOST R ISO 15353-2014 GOST P 55080-2012 GOST R ISO 16962-2012 GOST R ISO 10153-2011 GOST R ISO 10280-2010 GOST R ISO 4940-2010 GOST R ISO 4943-2010 GOST R ISO 14284-2009 GOST R ISO 9686-2009 GOST R ISO 13899-2-2009 GOST 18895-97 GOST 12361-2002 GOST 12359-99 GOST 12358-2002 GOST 12351-2003 GOST 12345-2001 GOST 12344-88 GOST 12350-78 GOST 12354-81 GOST 12346-78 GOST 12353-78 GOST 12348-78 GOST 12363-79 GOST 12360-82 GOST 17051-82 GOST 12349-83 GOST 12357-84 GOST 12365-84 GOST 12364-84 STATE STANDARD P 51576-2000 GOST 29117-91 GOST 12347-77 GOST 12355-78 GOST 12362-79 GOST 12352-81 GOST P 50424-92 STATE STANDARD P 51056-97 GOST P 51927-2002 GOST P 51928-2002 GOST 12356-81 GOST R ISO 13898-1-2006 GOST R ISO 13898-3-2007 GOST R ISO 13898-4-2007 GOST R ISO 13898-2-2006 STATE STANDARD P 52521-2006 GOST P 52519-2006 GOST R 52520-2006 GOST P 52518-2006 GOST 1429.14-2004 GOST 24903-81 GOST 22662-77 GOST 6012-2011 GOST 25283-93 GOST 18318-94 GOST 29006-91 GOST 16412.4-91 GOST 16412.7-91 GOST 25280-90 GOST 2171-90 GOST 23401-90 GOST 30642-99 GOST 25698-98 GOST 30550-98 GOST 18898-89 GOST 26849-86 GOST 26876-86 GOST 26239.5-84 GOST 26239.7-84 GOST 26239.3-84 GOST 25599.4-83 GOST 12226-80 GOST 23402-78 GOST 1429.9-77 GOST 1429.3-77 GOST 1429.5-77 GOST 19014.3-73 GOST 19014.1-73 GOST 17235-71 GOST 16412.5-91 GOST 29012-91 GOST 26528-98 GOST 18897-98 GOST 26529-85 GOST 26614-85 GOST 26239.2-84 GOST 26239.0-84 GOST 26239.8-84 GOST 25947-83 GOST 25599.3-83 GOST 22864-83 GOST 25599.1-83 GOST 25849-83 GOST 25281-82 GOST 22397-77 GOST 1429.11-77 GOST 1429.1-77 GOST 1429.13-77 GOST 1429.7-77 GOST 1429.0-77 GOST 20018-74 GOST 18317-94 STATE STANDARD P 52950-2008 GOST P 52951-2008 GOST 32597-2013 GOST P 56307-2014 GOST 33731-2016 GOST 3845-2017 STATE STANDARD P ISO 17640-2016 GOST 33368-2015 GOST 10692-2015 GOST P 55934-2013 GOST P 55435-2013 STATE STANDARD P 54907-2012 GOST 3845-75 GOST 11706-78 GOST 12501-67 GOST 8695-75 GOST 17410-78 GOST 19040-81 GOST 27450-87 GOST 28800-90 GOST 3728-78 GOST 30432-96 GOST 8694-75 GOST R ISO 10543-99 GOST R ISO 10124-99 GOST R ISO 10332-99 GOST 10692-80 GOST R ISO 17637-2014 GOST P 56143-2014 GOST R ISO 16918-1-2013 GOST R ISO 14250-2013 GOST P 55724-2013 GOST R ISO 22826-2012 GOST P 55143-2012 GOST P 55142-2012 GOST R ISO 17642-2-2012 GOST R ISO 17641-2-2012 GOST P 54566-2011 GOST 26877-2008 GOST R ISO 17641-1-2011 GOST R ISO 9016-2011 GOST R ISO 17642-1-2011 STATE STANDARD P 54790-2011 GOST P 54569-2011 GOST P 54570-2011 STATE STANDARD P 54153-2010 GOST R ISO 5178-2010 GOST R ISO 15792-2-2010 GOST R ISO 15792-3-2010 GOST P 53845-2010 GOST R ISO 4967-2009 GOST 6032-89 GOST 6032-2003 GOST 7566-94 GOST 27809-95 GOST 22974.9-96 GOST 22974.8-96 GOST 22974.7-96 GOST 22974.6-96 GOST 22974.5-96 GOST 22974.4-96 GOST 22974.3-96 GOST 22974.2-96 GOST 22974.1-96 GOST 22974.13-96 GOST 22974.12-96 GOST 22974.11-96 GOST 22974.10-96 GOST 22974.0-96 GOST 21639.9-93 GOST 21639.8-93 GOST 21639.7-93 GOST 21639.6-93 GOST 21639.5-93 GOST 21639.4-93 GOST 21639.3-93 GOST 21639.2-93 GOST 21639.0-93 GOST 12502-67 GOST 11878-66 GOST 1763-68 GOST 13585-68 GOST 16971-71 GOST 21639.10-76 GOST 2604.1-77 GOST 11930.7-79 GOST 23870-79 GOST 11930.12-79 GOST 24167-80 GOST 25536-82 GOST 22536.2-87 GOST 22536.11-87 GOST 22536.6-88 GOST 22536.10-88 GOST 17745-90 GOST 26877-91 GOST 8233-56 GOST 1778-70 GOST 10243-75 GOST 20487-75 GOST 12503-75 GOST 21548-76 GOST 21639.11-76 GOST 2604.8-77 GOST 23055-78 GOST 23046-78 GOST 11930.11-79 GOST 11930.1-79 GOST 11930.10-79 GOST 24715-81 GOST 5639-82 GOST 25225-82 GOST 2604.11-85 GOST 2604.4-87 GOST 22536.5-87 GOST 22536.7-88 GOST 6130-71 GOST 23240-78 GOST 3242-79 GOST 11930.3-79 GOST 11930.5-79 GOST 11930.9-79 GOST 11930.2-79 GOST 11930.0-79 GOST 23904-79 GOST 11930.6-79 GOST 7565-81 GOST 7122-81 GOST 2604.3-83 GOST 2604.5-84 GOST 26389-84 GOST 2604.7-84 GOST 28830-90 GOST 21639.1-90 GOST 5640-68 GOST 5657-69 GOST 20485-75 GOST 21549-76 GOST 21547-76 GOST 2604.6-77 GOST 22838-77 GOST 2604.10-77 GOST 11930.4-79 GOST 11930.8-79 GOST 2604.9-83 GOST 26388-84 GOST 14782-86 GOST 2604.2-86 GOST 21639.12-87 GOST 22536.8-87 GOST 22536.0-87 GOST 22536.3-88 GOST 22536.12-88 GOST 22536.9-88 GOST 22536.14-88 GOST 22536.4-88 GOST 22974.14-90 GOST 23338-91 GOST 2604.13-82 GOST 2604.14-82 GOST 22536.1-88 GOST 28277-89 GOST 16773-2003 GOST 7512-82 GOST 6996-66 GOST 12635-67 GOST 12637-67 GOST 12636-67 GOST 24648-90

GOST 8694−75 Pipe. The method of expansion testing (with Change No. 1)

GOST 8694−75

Group В69

INTERSTATE STANDARD

PIPE

The test method for distribution

Тubing. Hrapp testing method


Date of introduction 1977−01−01


Promulgated by decree of the State Committee of standards of Ministerial Council of the USSR from 23.12.75 N 3980

The expiration time limit is removed by the resolution of Gosstandard dated 10.09.92 N 1152

REPLACE GOST 8694−58

EDITION with Change No. 1, approved in April 1980 (ICS 5−80)


This standard applies to seamless and welded metal pipe of circular cross section with a wall thickness of not more than 9.0 mm and a pipe diameter not exceeding 150 mm and sets the method of expansion testing at a temperature of (20±10) °C.

Standard meets the requirements of the CMEA recommendations on standardisation RS 68−63 and ISO recommendation R 166.

The standard fully complies ST SEV 480−77 in terms of expansion testing.

(Changed edition, Rev. N 1).

1. DESIGNATION

1.1. When tested on the distribution contains the following designations:

— the initial outer diameter of sample, mm ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

— end outer diameter of sample, mm ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

— the initial wall thickness of the specimen, mm ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

— length of specimen, mm ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

the angle of taper of the mandrel, deg. ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

— value distribution, % — ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1);

the diameter of the cylindrical part of the mandrel, mm ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1).

(Changed edition, Rev. N 1).

2. SAMPLING METHOD

2.1. For testing pipes for the distribution of the used samples in the form of pipe cut from the end of the pipe length ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)2ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1), if the angle of the mandrel to 30° and ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)a 1.5ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1), if the angle of the mandrel more than 30° but not less than 50 mm.

2.2. It is possible to use shorter samples, provided that the cylindrical section, the remaining after the distribution be greater than 0.5 the outer diameter of the pipe.

2.3. The cutting plane must be perpendicular to the longitudinal axis of the pipe.

The burrs on the edges of the sample should be removed.

2.4. The test can be performed directly on the pipe. The end of the pipe to be tested must be in the plane perpendicular to the axis of the pipe.

2.5. Remove inner bead on the samples taken from the welded pipe, the method does not change the properties of pipe material and weld.

2.6. The measurement of the outer diameter of the sample before and after the test is carried out with an accuracy of not more than 0.05 mm at the pipe diameter up to 20 mm and with an error of not more than 0.1 mm at the pipe diameter more than 20 mm.

3. TESTING

3.1. For tests used a mandrel with a taper angle 30; 45; 60; 90; 120°.

Notes:

1. It is possible to use mandrels with taper angles of 6 and 12°.

2. It is possible to use mandrels with a cylindrical part (Fig.1). In this case, the diameter of the cylindrical part ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1), in millimetres, calculated in the formula

ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)

ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)


Damn.1

3.2. The working surface of the mandrel shall have a hardness of HRCГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)50, the parameters of surface roughness not lower than ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)=20 µm according to GOST 2789−73 and when tested shall be covered with grease.

3.3. When testing is not permitted rotational movement of the mandrel or of the sample.

The speed of introduction of the mandrel into the sample with differences in the quality assessment test should be 20−50 mm/min.

3.4. The test is carried out to smooth the distribution of the sample end of the mandrel with a predetermined taper angle to receive the end of the sample a specified outside diameter ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)(Fig.2).

ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)


Damn.2

4. PROCESSING OF THE RESULTS

4.1. A sign that the sample has withstood the test, is the absence of it after the distribution by the specified amount ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)of cracks or tears with a metallic luster, assessed visually.

4.2. Size distribution ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)in percentage is calculated by the formula

ГОСТ 8694-75 Трубы. Метод испытания на раздачу (с Изменением N 1)


Rounding of calculated values of distribution of produce to 0.5%.

5. TEST REPORT


The test report should indicate:

— material and size of pipe;

— the results obtained.

Sec. 5. (Added, Rev. N 1).