ASTM A381-96

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: A 381 – 96 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Metal-Arc-Welded Steel Pipe for Use With High-Pressure
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Transmission Systems
This standard is issued under the fixed designation A 381; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Tensile Requirements
1. Scope
1.1 This specification covers straight seam, double-
Class Yield Strength, Tensile Strength, Elongation in 2 in.
submerged-arc-welded steel pipe (Note 1) suitable for high-
min, psi (MPa) min, psi (MPa) (50.8 mm),
min, %
pressure service, 16 in. (406 mm) and larger in outside
5 1
diameter, with wall thicknesses from ⁄16 to 1 ⁄2 in. (7.9 to 38
Y 35 35 000 (240) 60 000 (415) 26
Y 42 42 000 (290) 60 000 (415) 25
mm). The pipe is intended for fabrication of fittings and
Y 46 46 000 (316) 63 000 (435) 23
accessories for compressor or pump-station piping. Pipe or-
Y 48 48 000 (330) 62 000 (430) 21
dered to this specification shall be suitable for bending, Y 50 50 000 (345) 64 000 (440) 21
Y 52 52 000 (360) 66 000 (455) 20
flanging (vastoning), corrugating, and similar operations.
Y 56 56 000 (385) 71 000 (490) 20
Y 60 60 000 (415) 75 000 (515) 20
NOTE 1—A comprehensive listing of standardized pipe dimensions is
Y 65 65 000 (450) 77 000 (535) 20
contained in ANSI B36.10.
NOTE 2—The term “double welded” is commonly used in the gas and
oil transmission industry, for which this pipe is primarily intended, to E 30 Test Methods for Chemical Analysis of Steel, Cast
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indicate welding with at least two weld passes, of which one is on the
Iron, Open-Hearth Iron, and Wrought Iron
outside of the pipe and one on the inside.
2.2 ASME Boiler and Pressure Vessel Code:
For some sizes of the pipe covered by this specification, it becomes
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Section VIII Pressure Vessels
expedient to use manual welding, in which case the provisions of Note 3
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Section IX Welding Qualifications
shall be followed.
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2.3 ANSI Standard:
1.2 Nine classes of pipe, based on minimum yield point
ANSI B36.10 Welded and Seamless Wrought Steel Pipe
requirements, are covered as indicated in Table 1.
3. Ordering Information
1.3 The values stated in inch-pound units are to be regarded
as the standard. The metric equivalents of inch-pound units 3.1 Orders for material to this specification should include
may be approximate.
the following, as required, to describe the desired material
1.4 The following hazard caveat applies to the test methods adequately:
portion, Sections 9 and 10, only. This standard does not
3.1.1 Quantity (feet, centimetres, or number of lengths),
purport to address all of the safety problems, if any, associated 3.1.2 Name of material (metal-arc welded pipe),
with its use. It is the responsibility of the user of this standard
3.1.3 Class (Table 1),
to establish appropriate safety and health practices and 3.1.4 Material (carbon or alloy steel, Section 5),
determine the applicability of regulatory limitations prior to
3.1.5 Size (outside diameter and wall thickness),
use.
3.1.6 Length (specific or random) (Section 13),
3.1.7 Ends (Section 14),
2. Referenced Documents
3.1.8 Heat treatment (stress-relieved or normalized) (see
2.1 ASTM Standards:
5.6),
A 370 Test Methods and Definitions for Mechanical Testing 3.1.9 Optional requirements (see 5.2 (Note 3), Sections 11
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of Steel Products
and 15),
A 530/A 530M Specification for General Requirements for 3.1.10 Specification number, and
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Specialized Carbon and Alloy Steel Pipe
3.1.11 Special requirements or exceptions to this specifica-
tion.
4. General Requirements
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This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel, and Related Alloys, and is the direct responsibility of Subcommittee
4.1 Material furnished to this specification shall conform to
A01.09 on Carbon Steel Tubular Products.
Current edition approved Sept. 10, 1996. Published August 1997. Originally
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published as A 381 – 54 T. Last previous edition A 381 – 93. Annual Book of ASTM Standards, Vol 03.05.
2 5
Annual Book of ASTM Standards, Vol 01.03. Available from American Society of Mechanical Engineers, 345 E. 47th St.,
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Annual Book of ASTM Standards, Vol 01.01. New York, NY 10017.
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A 381
the applicable requirements of the current edition of Specifi- taken from the finished pipe shall conform to the requirements
cation A 530/A 530M, unless otherwise provided herein. prescribed in Table 1. The t
...