ASTM A671-96

    Historical Standard: ASTM A671-96 Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures

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    1. Scope

    1.1 This specification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.

    1.2 The specification nominally covers pipe 16 in. (405 mm) in outside diameter or larger and of 1/ 4 in. (6.4 mm) wall thickness or greater. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.

    1.3 Several grades and classes of pipe are provided.

    1.3.1 Grade designates the type of plate used as listed in 5.1.

    1.3.2 Class designates the type of heat treatment performed during manufacture of the pipe, whether the weld is radiographically examined, and whether the pipe has been pressure tested as listed in 1.3.3.

    1.3.3 Class designations are as follows (Note 1):

    ClassHeat Treatment on Pipe Radiography, see SectionPressure Test, see:
    10none nonenone
    11none9none
    12none98.3
    13none none8.3
    20stress relieved, see 5.3.1nonenone
    21stress relieved, see 5.3.19none
    22stress relieved, see 5.3.198.3
    23stress relieved, see 5.3.1none8.3
    30normalized, see 5.3.2nonenone
    31normalized, see 5.3.29none
    32normalized, see 5.3.298.3
    33normalized, see 5.3.2none8.3
    40normalized and tempered, see 5.3.3 none none
    41normalized and tempered, see 5.3.39none
    42normalized and tempered, see 5.3.398.3
    43normalized and tempered, see 5.3.3 none 8.3
    50quenched and tempered, see 5.3.4 none none
    51quenched and tempered, see 5.3.4 9none
    52quenched and tempered, see 5.3.498.3
    53quenched and tempered, see 5.3.4none 8.3
    60normalized and precipitation heat treatednonenone
    61normalized and precipitation heat treated9 none
    62normalized and precipitation heat treated9 8.3
    63normalized and precipitation heat treatednone8.3
    70 quenched and precipitation heat treatednone none
    71 quenched and precipitation heat treated9 none
    72quenched and precipitation heat treated98.3
    73 quenched and precipitation heat treatednone 8.3
    Note 1—Selection of materials should be made with attention to temperature of service. For such guidance, Specification A 20/A 20M may be consulted.

    1.4 The values stated in inch-pound units are to be regarded as the standard.


    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/A0671-96

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