A790A790M无缝及焊接的铁素体奥氏体不锈钢公称管执行标准.pdf

An American National Standard Designation: A 790/A 790M – 02 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe1 This standard is issued under the fixed designation A 790/A 790M; 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 () indicates an editorial change since the last revision or reapproval. 1. Scope * A 999/A 999M Specification for General Requirements for 4 2 covers seamless and straight-seam Alloy and Stainless Steel Pipe 1.1 This specification welded ferritic/austenitic steel pipe intended for general corro- E 213 Practice for Ultrasonic Examination of Metal Pipe sive service, with particular emphasis on resistance to stress and Tubing5 corrosion cracking. These steels are susceptible to embrittle- E 309 Practice for Eddy-Current Examination of Steel Tu- ment if used for prolonged periods at elevated temperatures. bular Products Using Magnetic Saturation5 1.2 Optional supplementary requirements are provided for E 381 Method of Macroetch Testing Steel Bars, Billets, pipe when a greater degree of testing is desired. These Blooms, and Forgings6 sup