ASTM A999 Standard Specification

ASTM A999 / A999M – 12 Standard Specification for General Requirements for Alloy and Stainless Steel Pipe

Austenitic stainless steel pipe

Austenitic stainless steel pipe

ASTM A999 Standard specification covers a group of general requirements that, unless otherwise specified in an individual specification, shall apply to the ASTM product specifications noted below.
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 Specification ASTM Designation
Seamless and Welded Austenitic Stainless Steel Pipes ASTM A312 / A312M
Seamless and Welded Steel Pipe for Low-Temperature Service ASTM A333 / A333M
Seamless Ferritic Alloy-Steel Pipe for High Temperature Service ASTM A335 / A335M
Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service ASTM A358 / A358M
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service ASTM A369 / A369M
Seamless Austenitic Steel Pipe for Use With High Temperature Central-Station Service ASTM A376 / A376M
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service ASTM A409 / A409M
Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service ASTM A426 / A426M
Centrifugally Cast Austenitic Steel Pipe for High Temperature Service ASTM A451 / A451M
Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperatures ASTM A608 / A608M
Welded, Unannealed Austenitic Stainless Steel Tubular Products ASTM A778
Seamless and Welded Ferritic / Austenitic
Stainless Steel Pipe
ASTM A790 / A790M
Single- or Double-Welded Austenitic Stainless Steel Pipe ASTM A813 / A813M
Cold-Worked Welded Austenitic Stainless Steel Pipe ASTM A814 / A814M
Centrifugally Cast Ferritic / Austenitic Stainless Steel Pipe for Corrosive Environments ASTM A872 / A872M
Ferritic / Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal ASTM A928 / A928M
Spray-Formed Seamless Austenitic Stainless Steel Pipe ASTM A943 / A943M
Spray-Formed Seamless Ferritic / Austenitic Stainless Steel Pipe ASTM A949 / A949M
Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless and Welded Pipe ASTM A954

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.”

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.

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