ASTM A234/A234M-03
(Specification)Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
SCOPE
1.1 This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASME B16.9, B16.11, B16.28, MSS SP-79, and MSS SP-95. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960.
1.2 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. When desired, one or more of these supplementary requirements may be specified in the order.
1.3 This specification does not cover cast welding fittings or fittings machined from castings. Cast steel welding fittings are governed by Specifications A216/A216M and A217/A217M.
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.
1.5 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 are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
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Used in USDOE-NE Standards
Designation: A 234/A 234M – 03
Standard Specification for
Piping Fittings of Wrought Carbon Steel and Alloy Steel for
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Moderate and High Temperature Service
This standard is issued under the fixed designation A 234/A 234M; 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.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope* 2.2 ASTM Standards:
2 A 216/A 216M Specification for Steel Castings, Carbon,
1.1 This specification covers wrought carbon steel and
Suitable for Fusion Welding, for High-Temperature Ser-
alloy steel fittings of seamless and welded construction covered
vice
by the latest revision of ASME B16.9, B16.11, B16.28, MSS
A 217/A 217M Specification for Steel Castings, Martensi-
SP-79, and MSS SP-95. These fittings are for use in pressure
tic Stainless and Alloy, for Pressure-Containing Parts
piping and in pressure vessel fabrication for service at moder-
Suitable for High-Temperature Service
ate and elevated temperatures. Fittings differing from these
A 960 Specification for Common Requirements for
ASME and MSS standards shall be furnished in accordance
Wrought Steel Piping Fittings
with Supplementary Requirement S58 of Specification A 960.
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2.3 ASME Standards:
1.2 Optional supplementary requirements are provided for
B16.9 Steel Butt-Welding Fittings
fittings where a greater degree of examination is desired. When
B16.11 Forged Steel Fittings, Socket Welding and Threaded
desired, one or more of these supplementary requirements may
B16.28 Wrought Steel Butt-Welding Short Radius Elbows
be specified in the order.
and Returns
1.3 This specification does not cover cast welding fittings or
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2.4 ASME Boiler and Pressure Vessel Code:
fittings machined from castings. Cast steel welding fittings are
Section V Nondestructive Examination
governed by Specifications A 216/A 216M and A 217/
Section VIII, Division 1, Pressure Vessels
A 217M.
Section IX Welding Qualifications
1.4 This specification is expressed in both inch-pound units
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2.5 MSS Standards:
and in SI units. However, unless the order specifies the
MSS SP-25 Standard Marking System for Valves, Fittings,
applicable “M” specification designation (SI units), the mate-
Flanges, and Unions
rial shall be furnished to inch-pound units.
MSS SP-79 Socket Welding Reducer Inserts
1.5 The values stated in either inch-pound units or SI units
MSS SP-95 Swage(d) Nipples and Bull Plugs
are to be regarded separately as standard. Within the text, the
2.6 ASNT Standard:
SI units are shown in brackets. The values stated in each
SNT-TC-1A(1984) Recommended Practice for Nondestruc-
system are not exact equivalents; therefore, each system must
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tive Testing Personnel Qualification and Certification
be used independently of the other. Combining values from the
two systems may result in nonconformance with the specifi-
3. Ordering Information
cation.
3.1 See Specification A 960.
2. Referenced Documents
2.1 In addition to those reference documents listed in
Specification A 960, the following list of standards apply to
this specification.
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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
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee the ASTM website.
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A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Available from ASME International, Three Park Avenue, New York, NY
Materials for Piping and Special Purpose Applications. 10016–5990.
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Available from Manufacturers Standardization Society of the Valve and Fittings
Current edition approved Oct. 1, 2003. Published November 2003. Originally
approved in 1940. Last previous edition approved in 2002 as A 234/A 234M – 02. Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
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For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American Society for Nondestructive Testing, 4153 Arlingate
cation SA-234 in Section II of that Code. Plaza, Columbus, OH 43228-0518.
*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.
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A 234/A 234M – 03
4. General Requirements two or more of these operations. The forming procedure shall
be so applied that it
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