ASTM A999/A999M-01

ASTM A999/A999M-01 - 10.3.2001

1. Scope

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 Specification ASTM Designation
Seamless and Welded Austenitic Stainless Steel Pipe A 312/A 312M
Seamless and Welded Steel Pipe for Low-Temperature Service A 333/A 333M
Seamless Ferritic Alloy-Steel Pipe for High Temperature Service A 335/A 335M
Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service A 358/A 358M
Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service A 369/A 369M
Seamless Austenitic Steel Pipe for Use With High Temperature Central-Station Service A 376/A 376M
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service A 409/A 409M
Welded, Unannealed Austenitic Stainless Steel Tubular Products A 778
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe A 790/A 790M
Single- or Double-Welded Austenitic Stainless Steel Pipe A 813/A 813M
Cold-Worked Welded Austenitic Stainless Steel Pipe A 814/A 814M
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal A 928
Spray-Formed Seamless Austenitic Stainless Steel Pipe A 943
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe A 949
Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless and Welded Pipe A 954

1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. With 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. The inch-pound units shall 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 21, 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.

2. Referenced Documents

A426/A426M-25	Standard Specification for Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service
E213-22	Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing
A608/A608M-20	Standard Specification for Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperatures
A700-14(2019)	Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment
A751-25	Standard Test Methods and Practices for Chemical Analysis of Steel Products
A949-A949M-01(2005)	Standard Specification for Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
A872/A872M-21	Standard Specification for Centrifugally Cast Ferritic/Austenitic Stainless Steel Pipe for Corrosive Environments
A943-A943M-01(2005)	Standard Specification for Spray-Formed Seamless Austenitic Stainless Steel Pipes
A1058-19	Standard Test Methods for Mechanical Testing of Steel Products´Metric
D3951-18(2023)	Standard Practice for Commercial Packaging
A358/A358M-24a	Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications (Includes all amendments and changes 1/27/2025).
A369/A369M-24	Standard Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service
A376/A376M-22	Standard Specification for Seamless Austenitic Steel Pipe for High-Temperature Service
A409/A409M-24	Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
A312/A312M-25	Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
A333/A333M-24	Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with Required Notch Toughness
E273-25	Standard Practice for Ultrasonic Testing of the Weld Zone of Welded Pipe and Tubing
E309-24	Standard Practice for Eddy Current Examination of Steel Tubular Products
E426-16(2021)	Standard Practice for Electromagnetic (Eddy Current) Examination of Seamless and Welded Tubular Products, Titanium, Austenitic Stainless Steel and Similar Alloys
E570-25	Standard Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
A335/A335M-26	Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
A370-26	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
A778-01	Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products
A790/A790M-24	Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A813/A813M-24	Standard Specification for Single- or Double-Welded Austenitic Stainless Steel Pipe
A814-A814M-15	Standard Specification for Cold-Worked Welded Austenitic Stainless Steel Pipe
A928/A928M-14(2025)	Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
A941-26a	Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys (Includes all amendments and changes 4/15/2026).
A954-02	Standard Specification for Austenitic Chromium-Nickel-Silicon Alloy Steel Seamless and Welded Pipe (Withdrawn 2005)
A994-24	Standard Guide for Editorial Procedures and Form of Product Specifications for Steel, Stainless Steel, and Related Alloys
A451/A451M-20	Standard Specification for Centrifugally Cast Austenitic Steel Pipe for High-Temperature Service