ASTM A134/A134M-19

Standard Specification for Pipe, Steel, Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over)

ABSTRACT
This specification covers electric-fusion (arc)-welded straight seam or spiral seam steel pipes with diameters NPS 16 and larger. The materials for these pipes as well as the welding procedure shall conform to other ASTM standards listed herein. This standard also contains requirements for the permissible weight and dimension variations and pipe lengths.
SCOPE
1.1 This specification covers electric-fusion (arc)-welded straight seam or spiral seam steel pipe NPS 16 and over in diameter (inside or outside as specified by purchaser), with wall thicknesses up to 3/4 in. [19 mm], inclusive. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification. The pipe is available in various grades based on the ASTM specification ordered (Section 4).
Note 1: Acceptability for many services may be controlled by codes or standards such as those published by the American National Standards Institute and American Society of Mechanical Engineers.
Note 2: For testing methods not specifically covered in this specification, reference can be made to Test Methods and Definitions A370, with particular reference to Annex A2 on Steel Tubular Products.
Note 3: A comprehensive listing of standardized pipe dimensions is contained in ANSI B 36.10.  
1.2 The values stated in either SI units or inch-pound 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 non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order. In this specification hard or rationalized conversions apply to diameter, lengths, and tensile properties. Soft conversion applies to other SI measurements.
Note 4: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”  
1.3 The following caveat pertains specifically to Section 5 of this specification.  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.  
1.4 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.

General Information

• Status: Published
• Publication Date: 31-Oct-2019
• ICS: 23.040.10 - Iron and steel pipes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.09 - Carbon Steel Tubular Products

Relations

• Replaces: ASTM A134/A134M-18 - Standard Specification for Pipe, Steel, Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over)
• Effective Date: 01-Nov-2019
• Refers: ASTM A370-24 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Mar-2024
• Refers: ASTM A283/A283M-24 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates
• Effective Date: 01-Mar-2024
• Refers: ASTM A941-24 - Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
• Effective Date: 01-Mar-2024
• Refers: ASTM A1018/A1018M-23a - Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
• Effective Date: 01-Nov-2023
• Refers: ASTM A370-19 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jul-2019
• Refers: ASTM A1011/A1011M-18 - Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
• Effective Date: 01-Jun-2018
• Refers: ASTM A370-17a - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2017
• Refers: ASTM A941-17 - Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
• Effective Date: 01-Sep-2017
• Refers: ASTM A370-17 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Jan-2017
• Refers: ASTM A1018/A1018M-16a - Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
• Effective Date: 01-Sep-2016
• Refers: ASTM A370-15 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 01-Nov-2015
• Refers: ASTM A941-15 - Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
• Effective Date: 01-Nov-2015
• Refers: ASTM A370-14 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-May-2014
• Refers: ASTM A370-13 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• Effective Date: 15-Nov-2013

Overview

ASTM A134/A134M-19 is the internationally recognized standard specification developed by ASTM for electric-fusion (arc)-welded steel pipe in sizes NPS 16 and above. The document provides comprehensive requirements for both straight seam and spiral seam large-diameter steel pipes, specifying manufacturing, material, testing, dimensional, and marking obligations, ensuring consistent production of welded steel pipe for industrial, mechanical, and structural applications.

This standard outlines requirements for materials, welding procedures, hydrostatic testing, permissible dimensional variations, and certification. Both SI and inch-pound units are referenced, with a clear mandate for systems not to be combined. ASTM A134/A134M-19 aligns with international standardization principles and is recognized by agencies such as the U.S. Department of Defense.

Key Topics

• Scope & Material: Covers welded steel pipe (NPS 16 and larger) with wall thicknesses up to 3/4 in. [19 mm]. Pipes are made from steels conforming to ASTM A36/A36M, A283/A283M, A285/A285M, A1011/A1011M, or A1018/A1018M.
• Manufacturing Methods: Includes specific requirements for forming, welding (automatic or manual by agreement), and seam types (straight or spiral).
• Testing & Inspection:
  • Hydrostatic testing is mandatory unless stated otherwise in the order (“NH” marking for non-tested pipes).
  • Weld and tensile properties are verified through standardized tests (e.g., ASTM A370 for mechanical testing).
• Dimensions & Tolerances: Defines permissible variations in wall thickness, circumference, straightness, ovality, and pipe lengths.
• Marking & Certification: Requires each length of pipe to be marked with manufacturer, specification number, and pipe grade. Bar coding is permissible if specified.
• Supplementary & Special Requirements: Optional provisions for straightness, coatings, end finishes, and additional testing as agreed between purchaser and manufacturer.
• Safety: Users are responsible for establishing suitable safety, health, and environmental practices.

Applications

ASTM A134/A134M-19 welded steel pipes are crucial in multiple industries including:

• Water transmission and distribution
• Industrial piping systems
• Structural supports in civil engineering
• Penstocks for hydroelectric projects
• Process piping in power plants and chemical facilities
• Large-scale fabrication projects requiring custom diameters and lengths

The specification’s alignment with widely-adopted codes (such as ASME Boiler and Pressure Vessel Code) enables its pipes to be used in pressure piping and critical applications, provided additional requirements-like authorized ASME Section III manufacturing-are met.

Related Standards

• ASTM A36/A36M - Specification for Carbon Structural Steel
• ASTM A283/A283M - Specification for Low and Intermediate Tensile Strength Carbon Steel Plates
• ASTM A285/A285M - Specification for Pressure Vessel Plates, Carbon Steel
• ASTM A370 - Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A1011/A1011M - Specification for Hot-Rolled, Carbon, Structural Steel Sheet and Strip
• ASTM A1018/A1018M - Specification for Heavy-Thickness Coils, Hot-Rolled, Carbon Steel
• ASME Boiler and Pressure Vessel Code - Section III (nuclear applications), Section IX (Welding qualification)
• ANSI B36.10 - Welded and Seamless Wrought Steel Pipe Dimensions
• ANSI B16.25 - Buttwelding Ends

Practical Value

By implementing ASTM A134/A134M-19, manufacturers and purchasers ensure steel pipes meet rigorous criteria for strength, weld quality, and dimensional precision, increasing reliability and compliance in demanding engineering applications. This standard also facilitates easier procurement, quality assurance, and project specification for large-diameter steel pipe users worldwide.

Standards Content (Sample)

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: A134/A134M −19
Standard Specification for
Pipe, Steel, Electric-Fusion (Arc)-Welded (Sizes NPS 16 and
Over)
This standard is issued under the fixed designationA134/A134M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* appropriate safety, health, and environmental practices and
determine the applicability of regulatory limitations prior to
1.1 This specification covers electric-fusion (arc)-welded
use.
straight seam or spiral seam steel pipe NPS 16 and over in
1.4 This international standard was developed in accor-
diameter (inside or outside as specified by purchaser), with
dance with internationally recognized principles on standard-
wall thicknesses up to ⁄4 in. [19 mm], inclusive. Pipe having
ization established in the Decision on Principles for the
other dimensions may be furnished provided such pipe com-
Development of International Standards, Guides and Recom-
plies with all other requirements of this specification. The pipe
mendations issued by the World Trade Organization Technical
is available in various grades based on theASTM specification
Barriers to Trade (TBT) Committee.
ordered (Section 4).
2. Referenced Documents
NOTE 1—Acceptability for many services may be controlled by codes
or standards such as those published by theAmerican National Standards
2.1 ASTM Standards:
Institute and American Society of Mechanical Engineers.
A36/A36M Specification for Carbon Structural Steel
NOTE 2—For testing methods not specifically covered in this
A283/A283M Specification for Low and Intermediate Ten-
specification, reference can be made to Test Methods and Definitions
sile Strength Carbon Steel Plates
A370, with particular reference to Annex A2 on Steel Tubular Products.
NOTE 3—A comprehensive listing of standardized pipe dimensions is
A285/A285M Specification for Pressure Vessel Plates, Car-
contained in ANSI B 36.10.
bon Steel, Low- and Intermediate-Tensile Strength
1.2 The values stated in either SI units or inch-pound units
A370 Test Methods and Definitions for Mechanical Testing
are to be regarded separately as standard. Within the text, the of Steel Products
SI units are shown in brackets. The values stated in each
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
system may not be exact equivalents; therefore, each system
Alloys, and Ferroalloys
shall be used independently of the other. Combining values
A1011/A1011M Specification for Steel, Sheet and Strip,
from the two systems may result in non-conformance with the
Hot-Rolled, Carbon, Structural, High-Strength Low-
standard. The inch-pound units shall apply unless the “M”
Alloy, High-Strength Low-Alloy with Improved
designation of this specification is specified in the order. In this
Formability, and Ultra-High Strength
specification hard or rationalized conversions apply to
A1018/A1018M Specification for Steel, Sheet and Strip,
diameter, lengths, and tensile properties. Soft conversion ap-
Heavy-Thickness Coils, Hot-Rolled, Carbon,
plies to other SI measurements.
Commercial, Drawing, Structural, High-Strength Low-
Alloy, High-Strength Low-Alloy with Improved
NOTE 4—The dimensionless designator NPS (nominal pipe size) has
Formability, and Ultra-High Strength
been substituted in this standard for such traditional terms as “nominal
diameter,” “size,” and “nominal size.” A1058 Test Methods for Mechanical Testing of Steel
Products—Metric
1.3 The following caveat pertains specifically to Section 5
2.2 ASME Boiler and Pressure Vessel Code:
of this specification. This standard does not purport to address
Section III
all of the safety concerns, if any, associated with its use. It is
Section IX
the responsibility of the user of this standard to establish
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
This specification is under the jurisdiction ofASTM Committee A01 on Steel, contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee Standards volume information, refer to the standard’s Document Summary page on
A01.09 on Carbon Steel Tubular Products. the ASTM website.
Current edition approved Nov. 1, 2019. Published November 2019. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1931. Last previous edition approved in 2018 as A134/A134M – 18. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
DOI: 10.1520/A0134_A0134M-19. www.asme.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A134/A134M − 19
2.3 American National Standards Institute Standard: 6.2 If any test specimen shows defective machining or
B 16.25 Buttwelding Ends develops flaws not associated with the welding, it may be
B 36.10 Welded and Seamless Wrought Steel Pipe discarded and another specimen substituted.
6.3 Each length of pipe shall be subjected to the hydrostatic
3. Ordering Information
test specified in Section 11, unless otherwise specified in 11.3.
3.1 Orders for electric-fusion arc-welded pipe under this
7. Retests
specification shall contain information concerning as many of
thefollowingitemsasarerequired,todescribethedesiredpipe
7.1 If any specimen tested in accordance with Section 10
adequately:
fails to meet the requirements, retests of two additional
3.1.1 Quantity (feet, metres, or number of lengths),
specimens from the same lot of pipe shall be made, each of
3.1.2 Name of material (electric-fusion (arc)-welded pipe),
which shall meet the requirements specified. If any of the
3.1.3 ASTM Specification A134 or A134M and year date,
retests fail to conform to the requirements, test specimens may
3.1.4 Grade(ifapplicable)ofsteelfromwhichthepipeshall
be taken from each untested pipe length at the manufacturer’s
be made (Section 4),
option. Each specimen shall meet the requirements specified,
3.1.5 Size (inside or outside diameter and nominal wall
or that pipe shall be rejected.
thickness), and
8. Test Specimens of Production Welds
3.1.6 Length (specified or random).
8.1 The weld-test specimens for the reduced-section tension
3.2 The purchaser shall have the option to order additional
testshallbetakenperpendicularlyacrosstheweldandfromthe
requirements, including, but not limited to the following:
endofthepipeor,alternatively,fromflattestpiecesofmaterial
3.2.1 Specific straightness requirements (see 12.3),
conformingtotherequirementsinthespecificationsusedinthe
3.2.2 End finish (Section 14),
manufacture of the pipe. The alternative weld-test specimens
3.2.3 Hydrostatic Test Pressure (Section 11),
shall be welded with the same procedure and by the same
3.2.4 Protective coating (Section 20),
operator and equipment, and in sequence with the welding of
3.2.5 End use of pipe, and
thelongitudinaljointsinthepipe.Thetestpiecesshallhavethe
3.2.6 Other special or supplementary requirements, if any.
weld approximately in the middle of the specimen. The
specimens shall be straightened cold, and shall be tested at
4. Material
room temperature.
4.1 The steel from which the pipe is made shall conform to
8.2 Reduced-section tension-test specimens shall be pre-
Specifications A36/A36M, A283/A283M, A285/A285M,
pared in accordance with Fig. A2.3 of Test Methods and
A1011/A1011M, A1018/A1018M, or to other ASTM specifi-
Definitions A370, Annex A2 Steel Tubular Products.
cations for equally suitable weldable material, as specified. For
purposes of marking and certification, when required, the pipe
9. Qualification of Welding Procedure
grade of material shall be established by the A xxx plate
9.1 The welding procedure shall be qualified in accordance
specification designation and plate grade, when applicable.
with the American Welding Society Standard Qualification
5. Manufacture Procedure or ASME Section IX of the Boiler and Pressure
Vessel Code as agreed to between the manufacturer and the
5.1 The longitudinal edges of the steel shall be shaped to
purchaser using the tests and test values specified in 9.2 and
give the most satisfactory results by the particular welding
9.3. Thicknesses less than ⁄8 in. [10 mm] shall be qualified for
process employed. The steel shall then be properly formed and
3 3
each wall thickness of pipe manufactured.Thicknesses ⁄8 to ⁄4
may be tacked preparatory to welding. The weld shall be made
in. [10 mm to 19 mm], inclusive, shall be qualified in ⁄8-in.
by automatic means (except tack welds) and shall be of
[10-mm] thickness.
reasonablyuniformwidthandheightfortheentirelengthofthe
pipe. By agreement between the purchaser and the 9.2 Two reduced-section tension specimens (transverse
manufacturer, manual welding by qualified procedure and weld) made in accordance with Fig.A2.3 of Test Methods and
welders may be used as an equal alternate under this specifi- Definitions A370, with the weld reinforcement removed, shall
cation. show a tensile strength not less than 100 % of the minimum
specified tensile strength of the base material used.
5.2 All longitudinal seams, spiral seams, and shop girth
seams shall be butt-welded. 9.3 Two face-bend test specimens shall be prepared in
accordance with Section A2.5.1.7 of Test Methods and Defi-
6. Number of Production Weld Tests
nitions A370 and shall withstand being bent 180° in a jig
substantially in accordance with Fig. A2.15.3 of Test Methods
6.1 One weld test specimen specified in Section 8 shall be
and Definitions A370. The bend test shall be acceptable if no
made from each lot of 3000 ft [900 m] of pipe or fraction
cracksorotherdefectsexceeding ⁄8in.[3mm]inanydirection
thereof of each size and wall thickness.
be present in the weld metal or between the weld and the pipe
4 5
Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St., Available from American Welding Society (AWS), 8669 NW 36 St., #130,
4th Floor, New York, NY 10036, http://www.ansi.org. Miami, FL 33166-6672, http://www.aws.org.
A134/A134M − 19
metal after bending. Cracks that originate along the edges of 12.2 Circumference—The outside circumference of the pipe
the specimens during testing and that are less than ⁄4 in. [6 shall not vary more than 60.5 % from the nominal outside
mm] in any direction, shall not be considered. circumference based upon the diameter specified, except that
the circumference at ends shall be sized, if necessary, to meet
the requirements of Section 14.
10. Tensile Properties of Production Welds
10.1 Reduced-section tension test specimens required in 12.3 Straightness—Finished pipe shall be commercially
straight. When specific straightness requirements are desired,
Section 8, taken perpendicularly across the weld with the weld
reinforcement removed, shall show a tensile strength not less theordershouldsostate,andthetolerancesshallbeamatterof
agreement between the purchaser and the manufacturer.
than 95 % of the specified minimum strength of the steel. At
the manufacturer’s option, the test may be made w
...

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: A134/A134M − 18 A134/A134M − 19
Standard Specification for
Pipe, Steel, Electric-Fusion (Arc)-Welded (Sizes NPS 16 and
Over)
This standard is issued under the fixed designation A134/A134M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers electric-fusion (arc)-welded straight seam or spiral seam steel pipe NPS 16 and over in diameter
(inside or outside as specified by purchaser), with wall thicknesses up to ⁄4 in. [19 mm], inclusive. Pipe having other dimensions
may be furnished provided such pipe complies with all other requirements of this specification. The pipe is available in various
grades based on the ASTM specification ordered (Section 4).
NOTE 1—Acceptability for many services may be controlled by codes or standards such as those published by the American National Standards Institute
and American Society of Mechanical Engineers.
NOTE 2—For testing methods not specifically covered in this specification, reference can be made to Test Methods and Definitions A370, with particular
reference to Annex A2 on Steel Tubular Products.
NOTE 3—A comprehensive listing of standardized pipe dimensions is contained in ANSI B 36.10.
1.2 The values stated in either SI units or inch-pound 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 non-conformance with the standard. The
inch-pound units shall apply unless the “M” designation of this specification is specified in the order. In this specification hard or
rationalized conversions apply to diameter, lengths, and tensile properties. Soft conversion applies to other SI measurements.
NOTE 4—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,”
“size,” and “nominal size.”
1.3 The following caveat pertains specifically to Section 5 of this specification. 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.
1.4 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
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
A283/A283M Specification for Low and Intermediate Tensile Strength Carbon Steel Plates
A285/A285M Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A1011/A1011M Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-
Strength Low-Alloy with Improved Formability, and Ultra-High Strength
A1018/A1018M Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing,
Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength
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 Nov. 1, 2018Nov. 1, 2019. Published November 2018November 2019. Originally approved in 1931. Last previous edition approved in 20122018
as A134 – 96A134/A134M – 18. (2012). DOI: 10.1520/A0134_A0134M-18.10.1520/A0134_A0134M-19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A134/A134M − 19
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
2.2 ASME Boiler and Pressure Vessel Code:
Section III
Section IX
2.3 American National Standards Institute Standard:
B 16.25 Buttwelding Ends
B 36.10 Welded and Seamless Wrought Steel Pipe
3. Ordering Information
3.1 Orders for electric-fusion arc-welded pipe under this specification shall contain information concerning as many of the
following items as are required, to describe the desired pipe adequately:
3.1.1 Quantity (feet, metres, or number of lengths),
3.1.2 Name of material (electric-fusion (arc)-welded pipe),
3.1.3 ASTM Specification A134 or A134M and year date,
3.1.4 Grade (if applicable) of steel from which the pipe shall be made (Section 4),
3.1.5 Size (inside or outside diameter and nominal wall thickness), and
3.1.6 Length (specified or random).
3.2 The purchaser shall have the option to order additional requirements, including, but not limited to the following:
3.2.1 Specific straightness requirements (see 12.3),
3.2.2 End finish (Section 14),
3.2.3 Hydrostatic Test Pressure (Section 11),
3.2.4 Protective coating (Section 20),
3.2.5 End use of pipe, and
3.2.6 Other special or supplementary requirements, if any.
4. Material
4.1 The steel from which the pipe is made shall conform to Specifications A36/A36M, A283/A283M, A285/A285M,
A1011/A1011M, A1018/A1018M, or to other ASTM specifications for equally suitable weldable material, as specified. For
purposes of marking and certification, when required, the pipe grade of material shall be established by the A xxx plate
specification designation and plate grade, when applicable.
5. Manufacture
5.1 The longitudinal edges of the steel shall be shaped to give the most satisfactory results by the particular welding process
employed. The steel shall then be properly formed and may be tacked preparatory to welding. The weld shall be made by automatic
means (except tack welds) and shall be of reasonably uniform width and height for the entire length of the pipe. By agreement
between the purchaser and the manufacturer, manual welding by qualified procedure and welders may be used as an equal alternate
under this specification.
5.2 All longitudinal seams, spiral seams, and shop girth seams shall be butt-welded.
6. Number of Production Weld Tests
6.1 One weld test specimen specified in Section 8 shall be made from each lot of 3000 ft [900 m] of pipe or fraction thereof
of each size and wall thickness.
6.2 If any test specimen shows defective machining or develops flaws not associated with the welding, it may be discarded and
another specimen substituted.
6.3 Each length of pipe shall be subjected to the hydrostatic test specified in Section 11, unless otherwise specified in 11.3.
7. Retests
7.1 If any specimen tested in accordance with Section 10 fails to meet the requirements, retests of two additional specimens
from the same lot of pipe shall be made, each of which shall meet the requirements specified. If any of the retests fail to conform
to the requirements, test specimens may be taken from each untested pipe length at the manufacturer’s option. Each specimen shall
meet the requirements specified, or that pipe shall be rejected.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
A134/A134M − 19
8. Test Specimens of Production Welds
8.1 The weld-test specimens for the reduced-section tension test shall be taken perpendicularly across the weld and from the
end of the pipe or, alternatively, from flat test pieces of material conforming to the requirements in the specifications used in the
manufacture of the pipe. The alternative weld-test specimens shall be welded with the same procedure and by the same operator
and equipment, and in sequence with the welding of the longitudinal joints in the pipe. The test pieces shall have the weld
approximately in the middle of the specimen. The specimens shall be straightened cold, and shall be tested at room temperature.
8.2 Reduced-section tension-test specimens shall be prepared in accordance with Fig. A2.3 of Test Methods and Definitions
A370, Annex A2 Steel Tubular Products.
9. Qualification of Welding Procedure
9.1 The welding procedure shall be qualified in accordance with the American Welding Society Standard Qualification
Procedure or ASME Section IX of the Boiler and Pressure Vessel Code as agreed to between the manufacturer and the purchaser
using the tests and test values specified in 9.2 and 9.3. Thicknesses less than ⁄8 in. [10 mm] shall be qualified for each wall
3 3 3
thickness of pipe manufactured. Thicknesses ⁄8 to ⁄4 in. [10 mm to 19 mm], inclusive, shall be qualified in ⁄8-in. [10-mm]
thickness.
9.2 Two reduced-section tension specimens (transverse weld) made in accordance with Fig. A2.3 of Test Methods and
Definitions A370, with the weld reinforcement removed, shall show a tensile strength not less than 100 % of the minimum
specified tensile strength of the base material used.
9.3 Two face-bend test specimens shall be prepared in accordance with Section A2.5.1.7 of Test Methods and Definitions A370
and shall withstand being bent 180° in a jig substantially in accordance with Fig. A2.15.3 of Test Methods and Definitions A370.
The bend test shall be acceptable if no cracks or other defects exceeding ⁄8 in. [3 mm] in any direction be present in the weld metal
or between the weld and the pipe metal after bending. Cracks that originate along the edges of the specimens during testing and
that are less than ⁄4 in. [6 mm] in any direction, shall not be considered.
10. Tensile Properties of Production Welds
10.1 Reduced-section tension test specimens required in Section 8, taken perpendicularly across the weld with the weld
reinforcement removed, shall show a tensile strength not less than 95 % of the specified minimum strength of the steel. At the
manufacturer’s option, the test may be made without removing the weld reinforcement, in which case the tensile strength shall be
not less than the specified minimum tensile strength for the grade of steel used.
11. Hydrostatic Test (Note 5)
11.1 Each length of pipe shall be tested by the manufacturer to a hydrostatic pressure that will produce in the pipe wall a stress
of 60 % of the specified minimum yield point of the steel used at room temperature. The pressure shall be determined by the
following equation:
P 5 2St/D
where:
P = minimum hydrostatic test pressure, psi (Note 6) (not to exceed 2800 psi
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