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1.1 This specification covers a group of general requirements that, unless otherwise specified in an individual specification, shall apply to the ASTM product specifications noted below.

1.2 In the case of conflict between a requirement of a product specification and a requirement of this specification, the product specification shall prevail. In the case of conflict between a requirement of the product specification or a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail.

Title of SpecificationASTM Desig-
nation Seamless and Welded Austenitic Stainless Steel PipesA312/A312M Seamless and Welded Steel Pipe for Low-Temperature
ServiceA333/A333M Seamless Ferritic Alloy-Steel Pipe for High Temperature
ServiceA335/A335M Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy
Steel Pipe for High-Temperature ServiceA358/A358M Carbon and Ferritic Alloy Steel Forged and Bored Pipe for
High-Temperature Service A369/A369M Seamless Austenitic Steel Pipe for Use With High
Temperature Central-Station Service A376/A376M Welded Large Diameter Austenitic Steel Pipe for Corrosive
or High-Temperature ServiceA409/A409M Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature ServiceA426/A426M Centrifugally Cast Austenitic Steel Pipe for High-
Temperature ServiceA451/A451M Centrifugally Cast Iron-Chromium-Nickel High-Alloy
Tubing for Pressure Application at High
TemperaturesA608/A608M Welded, Unannealed Austenitic Stainless Steel Tubular
ProductsA778 Seamless and Welded Ferritic/Austenitic
Stainless Steel PipeA790/A790M Single- or Double-Welded Austenitic Stainless Steel PipeA813/A813M Cold-Worked Welded Austenitic Stainless Steel PipeA814/A814M Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe
for Corrosive EnvironmentsA872/A872M Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric
Fusion Welded with Addition of Filler MetalA928/A928M Spray-Formed Seamless Austenitic Stainless Steel PipeA943/A943M Spray-Formed Seamless Ferritic/Austenitic Stainless Steel PipeA949/A949M Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless
and Welded PipeA954

1.3 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 apply unless the “M” designation (SI) of the product specification is specified in the order.

Note 1—The dimensionless designator NPS (nominal pipe size) is used in this standard for such traditional terms as “nominal diameter,” “size,” “ nominal bore,” and “nominal size.”

1.4 The following precautionary statement pertains only to the test method portion, Section 22, 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 and health practices and determine the applicability of regulatory limitations prior to use.