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ASTM A928.pdf
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ASTM A928.pdf
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Designation: A 928/A 928M – 05
Standard Specification for
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric
Fusion Welded with Addition of Filler Metal
1
This standard is issued under the fixed designation A 928/A 928M; 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.
1. Scope*
1.1 This specification covers electric-fusion-welded steel
pipe suitable for corrosive service.
NOTE 1—The dimensionless designator NPS (nominal pipe size) has
been substituted in this specification for traditional terms such as nominal
diameter, size, and nominal size.
1.2 This specification covers grades of ferritic/austenitic
steel as indicated in
Table 1. The selection of the proper alloy
and requirements for heat treatment shall be at the discretion of
the purchaser, dependent on the service conditions to be
encountered.
1.3 Five classes of pipe are covered as follows:
1.3.1 Class 1—Pipe shall be double welded by processes
using filler metal in all passes and shall be radiographed
completely.
1.3.2 Class 2—Pipe shall be double welded by processes
using filler metal in all passes. No radiograph is required.
1.3.3 Class 3—Pipe shall be single welded by processes
using filler metal in all passes and shall be radiographed
completely.
1.3.4 Class 4—Same as Class 3, except that the weld pass
exposed to the inside pipe surface is permitted to be made
without the addition of filler metal (see
6.2.2.1 and 6.2.2.2).
1.3.5 Class 5—Pipe shall be double welded by processes
using filler metal in all passes and shall be spot radiographed.
1.4 Supplementary requirements covering provisions rang-
ing from additional testing to formalized procedures for
manufacturing practice are provided. Supplementary Require-
ments S1 through S4 are included as options to be specified in
the purchase order when desired.
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 specifi-
cation. The inch-pound units shall apply unless the M desig-
nation of the specification is specified in the order.
2. Referenced Documents
2.1 ASTM Standards:
2
A 240/A 240M Specification for Chromium and
Chromium-Nickel Stainless Steel Plate, Sheet, and Strip
for Pressure Vessels and General Applications
A 480/A 480M Specification for General Requirements for
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
A 941 Terminology Relating to Steel, Stainless Steel, Re-
lated Alloys, and Ferroalloys
A 999/A 999M Specification for General Requirements for
Alloy and Stainless Steel Pipe
E 426 Practice for Electromagnetic (Eddy-Current) Exami-
nation of Seamless and Welded Tubular Products, Austen-
itic Stainless Steel and Similar Alloys
2.2 ASME Boiler and Pressure Vessel Code:
3
Section III, Nuclear Vessels
Section VIII, Unfired Pressure Vessels
Section IX, Welding Qualifications
2.3 AWS Specifications:
4
A 5.4 Corrosion-Resisting Chromium and Chromium-
Nickel Steel Covered Welding Electrodes
A 5.9 Corrosion-Resisting Chromium and Chromium-
Nickel Steel Welding Rods and Bare Electrodes
A 5.11 Nickel and Nickel-Alloy Covered Welding Elec-
trodes
A 5.14 Nickel and Nickel-Alloy Bare Welding Rods and
Electrodes
A 5.22 Flux Cored Corrosion-Resisting Chromium and
Chromium-Nickel Steel Electrodes
A 5.30 Consumable Weld Inserts for Gas Tungsten Arc
Welding
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
A01.10 on Stainless and Alloy Steel Tubular Products.
Current edition approved September 1, 2005. Published September 2005.
Originally approved in 1994. Last previous edition approved in 2004 as A 928/
A 928M – 04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Three Park Ave., New York, NY 10016-5990.
4
Available from The American Welding Society (AWS), 550 NW LeJeune Rd.,
Miami, FL 33126.
1
*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.
Copyright by ASTM Int'l (all rights reserved);
Reproduction authorized per License Agreement with Kathe Hooper (ASTMIHS Account); Mon Oct 10 11:50:31 EDT 2005
Copyright ASTM International
Reproduced by IHS under license with ASTM
Not for Resale
No reproduction or networking permitted without license from IHS
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