JIS G3457 Arc welded carbon steel pipes

JIS G3457 Arc welded carbon steel pipes.

1 Scope

This Japanese Industrial Standard specifies the arc welded carbon steel pipes (hereafter referred to as “pipes”) used for piping for steam, water, gas, air, etc. of comparatively low working pressure.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this standard. The most recent editions of the standards (including amendments) indicated below shall be applied.

JIS G 0320 Standard test methods for heat analysis of steel products

JIS G 0404 Steel and steel products-General technical delivery requirements

JIS G 0415 Steel and steel products-Inspection documents

JIS G 0584 Ultrasonic examination for arc welded steel pipes

JIS Z 2201 Test pieces for tensile test for metallic materials

JIS Z 2241 Method of tensile test for metallic materials

JIS Z 3121 Methods of tensile test for butt welded joints

JIS Z 8401 Guide to the rounding of numbers

3 Grade and designation

The pipes shall be classified into one grade and its letter symbol shall be as given in table 1.

4 Method of manufacture

The method of manufacture of pipe shall be as follows:

a)The pipes shall be manufactured by spiral seam or straight seam welding. In either case, the internal and external surfaces of the pipe shall be automatic submerged arc welded in a butt joint.

b)The pipes shall be either as welded or as cold-expanded after welding, and, as a rule, should not be subjected to heat treatment.

c)Both ends of the pipe shall be finished plain ended or bevel ended(1).

Note (I) Unless otherwise specified, the shape of the bevel end shall be as shown in figure 1.

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