ASTM A671/A671M-20

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:A671/A671M −20
Standard Specification for
Electric-Fusion-Welded Steel Pipe for Atmospheric and
1
Lower Temperatures
This standard is issued under the fixed designationA671/A671M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
41 normalized and tempered, see 5.3.3 9 none
42 normalized and tempered, see 5.3.3 9 8.3
2
1.1 This specification covers electric-fusion-welded steel
43 normalized and tempered, see 5.3.3 none 8.3
pipe with filler metal added, fabricated from pressure vessel 50 quenched and tempered, see 5.3.4 none none
51 quenched and tempered, see 5.3.4 9 none
quality plate of several analyses and strength levels and
52 quenched and tempered, see 5.3.4 9 8.3
suitable for high-pressure service at atmospheric and lower
53 quenched and tempered, see 5.3.4 none 8.3
temperatures. Heat treatment may or may not be required to 70 quenched and precipitation heat none none
treated
attain the desired properties or to comply with applicable code
71 quenched and precipitation heat 9 none
requirements. Supplementary requirements are provided for
treated
72 quenched and precipitation heat98.3
use when additional testing or examination is desired.
treated
1.2 The specification nominally covers pipe 16 in. [400
73 quenched and precipitation heat none 8.3
1
treated
mm] in outside diameter or larger and of ⁄4 in. [6 mm] wall
thickness or greater. Pipe having other dimensions may be
NOTE 1—Selection of materials should be made with attention to
temperature of service. For such guidance, Specification A20/A20M may
furnished provided it complies with all other requirements of
be consulted.
this specification.
1.4 The values stated in either SI units or inch-pound units
1.3 Several grades and classes of pipe are provided.
are to be regarded separately as standard. Within the text, the
1.3.1 Gradedesignatesthetypeofplateusedaslistedin5.1.
SI units are shown in brackets. The values stated in each
1.3.2 Class designates the type of heat treatment performed
system may not be exact equivalents; therefore, each system
during manufacture of the pipe, whether the weld is radio-
shall be used independently of the other. Combining values
graphically examined, and whether the pipe has been pressure
from the two systems may result in non-conformance with the
tested as listed in 1.3.3.
standard. The inch-pound units shall apply unless the “M”
1.3.3 Class designations are as follows (Note 1):
designation of this specification is specified in the order.
Class Heat Treatment on Pipe Radiography, Pressure Test,
see Section see: 1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
10 none none none
ization established in the Decision on Principles for the
11 none 9 none
12 none 98.3 Development of International Standards, Guides and Recom-
13 none none 8.3
mendations issued by the World Trade Organization Technical
20 stress relieved, see 5.3.1 none none
Barriers to Trade (TBT) Committee.
21 stress relieved, see 5.3.1 9 none
22 stress relieved, see 5.3.1 9 8.3
23 stress relieved, see 5.3.1 none 8.3
2. Referenced Documents
30 normalized, see 5.3.2 none none
3
2.1 ASTM Standards:
31 normalized, see 5.3.2 9 none
32 normalized, see 5.3.2 9 8.3
A20/A20MSpecificationforGeneralRequirementsforSteel
33 normalized, see 5.3.2 none 8.3
Plates for Pressure Vessels
40 normalized and tempered, see 5.3.3 none none
A370Test Methods and Definitions for Mechanical Testing
of Steel Products
A435/A435MSpecification for Straight-Beam Ultrasonic
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Examination of Steel Plates
Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved March 1, 2020. Published March 2020. Originally
3
approved in 1972. Last previous edition approved in 2019 as A671/A671M–19. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0671_A0671M-20. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA-671 in Section II of that Code. the ASTM website.
*A Summary of Changes section appears at the end of this standard
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