Standard Specification for Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel Pipe for Use With High-Pressure Transmission Systems

ABSTRACT
This specification covers metal-arc-welded steel pipe for use with high pressure transmission systems. The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping. The required chemical compositions for carbon steel, and the tensile properties of finished pipes are presented. Mechanical testing requirements namely transverse body tension test and transverse weld tension test shall be performed on each length of pipe from each lot of 100 lengths, and transverse guided-bend weld test cut from a length of pipe from each lot of 50 length, also hydrostatic test from each length of pipes shall be performed. A radiographic examination shall also be performed to ensure that the welding equipment is consistently producing the required quality.
SCOPE
1.1 This specification covers straight seam, double-submerged-arc-welded carbon or high-strength low-alloy steel pipe (Note 1) suitable for high-pressure service, 16 in. [400 mm] and larger in outside diameter, with wall thicknesses from 5/16 to 11/2 in. [8 to 40 mm]. The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping. Pipe ordered to this specification shall be suitable for bending, flanging, corrugating, and similar operations.  
Note 1: A comprehensive listing of standardized pipe dimensions is 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 indicate welding with at least two weld passes, of which one is on the outside of the pipe and one on the inside. For some sizes of the pipe covered by this specification, it becomes expedient to use manual welding, in which case the provisions of Note 3 shall be followed.  
1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the applicable inch-pound units shall apply. The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 Eleven classes of pipe, based on minimum yield point requirements, are covered as indicated in Table 1.    
1.4 This specification identifies various thermal treatments (3.1.9, 5.5, and 5.6).  
1.5 The following caveat applies to the test methods portion, Sections 9, 10, and 11, only.  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM A381/A381M-18 - Standard Specification for Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel Pipe for Use With High-Pressure Transmission Systems
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REDLINE ASTM A381/A381M-18 - Standard Specification for Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel Pipe for Use With High-Pressure Transmission Systems
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Technical specification
ASTM A381/A381M-18 - Standard Specification for Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel Pipe for Use With High-Pressure Transmission Systems
English language
4 pages
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:A381/A381M −18
Standard Specification for
Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel
1
Pipe for Use With High-Pressure Transmission Systems
This standard is issued under the fixed designationA381/A381M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* to establish appropriate safety, health, and environmental
practices and determine the applicability of regulatory limita-
1.1 This specification covers straight seam, double-
tions prior to use.
submerged-arc-welded carbon or high-strength low-alloy steel
1.6 This international standard was developed in accor-
pipe (Note 1) suitable for high-pressure service, 16 in. [400
dance with internationally recognized principles on standard-
mm] and larger in outside diameter, with wall thicknesses from
ization established in the Decision on Principles for the
5 1
⁄16 to 1 ⁄2 in. [8 to 40 mm].The pipe is intended for fabrication
Development of International Standards, Guides and Recom-
of fittings and accessories for compressor or pump-station
mendations issued by the World Trade Organization Technical
piping. Pipe ordered to this specification shall be suitable for
Barriers to Trade (TBT) Committee.
bending, flanging, corrugating, and similar operations.
NOTE 1—A comprehensive listing of standardized pipe dimensions is
2. Referenced Documents
contained in ANSI B36.10.
2
2.1 ASTM Standards:
NOTE 2—The term “double welded” is commonly used in the gas and
A370 Test Methods and Definitions for Mechanical Testing
oil transmission industry, for which this pipe is primarily intended, to
indicate welding with at least two weld passes, of which one is on the
of Steel Products
outside of the pipe and one on the inside. For some sizes of the pipe
A530/A530M Specification for General Requirements for
coveredbythisspecification,itbecomesexpedienttousemanualwelding,
Specialized Carbon and Alloy Steel Pipe
in which case the provisions of Note 3 shall be followed.
A751 Test Methods, Practices, and Terminology for Chemi-
1.2 This specification is expressed in both inch-pound units
cal Analysis of Steel Products
and in SI units; however, unless the purchase order or contract
A1058 Test Methods for Mechanical Testing of Steel
specifies the applicable M specification designation (SI units),
Products—Metric
the applicable inch-pound units shall apply. The values stated
3
2.2 ASME Boiler and Pressure Vessel Code:
in either inch-pound units or SI units are to be regarded
Section VIII
separately as standard. Within the text, the SI units are shown
Section IX
in brackets. The values stated in each system may not be exact
4
2.3 ASME Standard:
equivalents;therefore,eachsystemshallbeusedindependently
ASME B36.10 Welded and Seamless Wrought Steel Pipe
of the other. Combining values from the two systems may
result in nonconformance with the standard.
3. Ordering Information
1.3 Eleven classes of pipe, based on minimum yield point
3.1 Orders for metal-arc-welded steel pipe to this specifica-
requirements, are covered as indicated in Table 1.
tion should include the following, as required, to describe the
1.4 This specification identifies various thermal treatments
desired material adequately:
(3.1.9, 5.5, and 5.6).
3.1.1 Quantity (feet, centimetres, or number of lengths),
1.5 The following caveat applies to the test methods 3.1.2 Name of material (metal-arc welded pipe),
portion, Sections 9, 10, and 11, only. This standard does not 3.1.3 Class (Table 1),
purport to address all of the safety concerns, if any, associated
with its use. It is the responsibility of the user of this standard
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, the ASTM website.
3
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Available from American Society of Mechanical Engineers, 345 E. 47th St.,
A01.09 on Carbon Steel Tubular Products. New York, NY 10017.
4
Current edition approved Nov. 1, 2018. Published December 2018. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1954. Last previous edition approved in 2012 as A381 – 96 (2012). International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
D
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A381 − 96 (Reapproved 2012) A381/A381M − 18
Standard Specification for
Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel
1
Pipe for Use With High-Pressure Transmission Systems
This standard is issued under the fixed designation A381;A381/A381M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This specification covers straight seam, double-submerged-arc-welded carbon or high-strength low-alloy steel pipe (Note 1)
5 1
suitable for high-pressure service, 16 in. (406 mm)[400 mm] and larger in outside diameter, with wall thicknesses from ⁄16 to 1 ⁄2
in. (7.9[8 to 38 mm).40 mm]. The pipe is intended for fabrication of fittings and accessories for compressor or pump-station piping.
Pipe ordered to this specification shall be suitable for bending, flanging (vastoning), flanging, corrugating, and similar operations.
NOTE 1—A comprehensive listing of standardized pipe dimensions is 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 indicate
welding with at least two weld passes, of which one is on the outside of the pipe and one on the inside. For some sizes of the pipe covered by this
specification, it becomes expedient to use manual welding, in which case the provisions of Note 3 shall be followed.
1.2 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract
specifies the applicable M specification designation (SI units), the applicable inch-pound units shall apply. The values stated in
either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Combining values from the two systems may result in nonconformance with the standard.
1.3 NineEleven classes of pipe, based on minimum yield point requirements, are covered as indicated in Table 1.
1.4 The values stated in inch-pound units areThis specification identifies various thermal treatments (3.1.9, 5.5to be regarded
as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only , and
5.6are not considered standard.).
1.5 The following caveat applies to the test methods portion, Sections 9 and , 10, and 11, only. This standard does not purport
to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish
appropriate safety safety, health, and healthenvironmental practices and determine the applicability of regulatory limitations prior
to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
E30A751 Test Methods Methods, Practices, and Terminology for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and
Wrought IronSteel Products (Withdrawn 1995)
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
3
2.2 ASME Boiler and Pressure Vessel Code:
Section VIII Pressure Vessels
Section IX Welding Qualifications
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.09
on Carbon Steel Tubular Products.
Current edition approved March 1, 2012Nov. 1, 2018. Published November 2012December 2018. Originally approved in 1954. Last previous edition approved in 20052012
as A381 – 96 (2005).(2012). DOI: 10.1520/A0381-96R12.10.1520/A0381_A0381M-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary
...

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: A381/A381M − 18
Standard Specification for
Metal-Arc-Welded Carbon or High-Strength Low-Alloy Steel
1
Pipe for Use With High-Pressure Transmission Systems
This standard is issued under the fixed designation A381/A381M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* to establish appropriate safety, health, and environmental
practices and determine the applicability of regulatory limita-
1.1 This specification covers straight seam, double-
tions prior to use.
submerged-arc-welded carbon or high-strength low-alloy steel
1.6 This international standard was developed in accor-
pipe (Note 1) suitable for high-pressure service, 16 in. [400
dance with internationally recognized principles on standard-
mm] and larger in outside diameter, with wall thicknesses from
ization established in the Decision on Principles for the
5 1
⁄16 to 1 ⁄2 in. [8 to 40 mm]. The pipe is intended for fabrication
Development of International Standards, Guides and Recom-
of fittings and accessories for compressor or pump-station
mendations issued by the World Trade Organization Technical
piping. Pipe ordered to this specification shall be suitable for
Barriers to Trade (TBT) Committee.
bending, flanging, corrugating, and similar operations.
NOTE 1—A comprehensive listing of standardized pipe dimensions is
2. Referenced Documents
contained in ANSI B36.10.
2
2.1 ASTM Standards:
NOTE 2—The term “double welded” is commonly used in the gas and
oil transmission industry, for which this pipe is primarily intended, to A370 Test Methods and Definitions for Mechanical Testing
indicate welding with at least two weld passes, of which one is on the
of Steel Products
outside of the pipe and one on the inside. For some sizes of the pipe
A530/A530M Specification for General Requirements for
covered by this specification, it becomes expedient to use manual welding,
Specialized Carbon and Alloy Steel Pipe
in which case the provisions of Note 3 shall be followed.
A751 Test Methods, Practices, and Terminology for Chemi-
1.2 This specification is expressed in both inch-pound units
cal Analysis of Steel Products
and in SI units; however, unless the purchase order or contract
A1058 Test Methods for Mechanical Testing of Steel
specifies the applicable M specification designation (SI units),
Products—Metric
the applicable inch-pound units shall apply. The values stated
3
2.2 ASME Boiler and Pressure Vessel Code:
in either inch-pound units or SI units are to be regarded
Section VIII
separately as standard. Within the text, the SI units are shown
Section IX
in brackets. The values stated in each system may not be exact
4
2.3 ASME Standard:
equivalents; therefore, each system shall be used independently
ASME B36.10 Welded and Seamless Wrought Steel Pipe
of the other. Combining values from the two systems may
result in nonconformance with the standard.
3. Ordering Information
1.3 Eleven classes of pipe, based on minimum yield point
3.1 Orders for metal-arc-welded steel pipe to this specifica-
requirements, are covered as indicated in Table 1.
tion should include the following, as required, to describe the
1.4 This specification identifies various thermal treatments
desired material adequately:
(3.1.9, 5.5, and 5.6).
3.1.1 Quantity (feet, centimetres, or number of lengths),
1.5 The following caveat applies to the test methods 3.1.2 Name of material (metal-arc welded pipe),
portion, Sections 9, 10, and 11, only. This standard does not 3.1.3 Class (Table 1),
purport to address all of the safety concerns, if any, associated
with its use. It is the responsibility of the user of this standard
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, the ASTM website.
3
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Available from American Society of Mechanical Engineers, 345 E. 47th St.,
A01.09 on Carbon Steel Tubular Products. New York, NY 10017.
4
Current edition approved Nov. 1, 2018. Published December 2018. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1954. Last previous edition approved in 2012 as A381 – 96 (2012). International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
DOI: 10.1520/A0381_A0381M-18. www.asme.org.
*A Summary of Changes section appears at the end of this standard
Copyright
...

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