ASTM A671 / A671M
This specification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired. The specification nominally covers pipe 16 in. [400 mm] in outside diameter or larger and of 1⁄4 in. [6 mm] wall thickness or greater. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.
| Pipe Grades | Type of Steel | ASTM Grades |
|---|---|---|
| CA 55 | Plain Carbon | A285/A285M Grade C |
| CB 60 | Plain Carbon,Killed | A515/A515M Grade 60 |
| CB 65 | A515/A515M Grade 65 | |
| CB 70 | A515/A515M Grade 70 | |
| CC 60 | Plain Carbon,Killed,Fine Grain | A516/A516M Grade 60 |
| CC 65 | A516/A516M Grade 65 | |
| CC 70 | A516/A516M Grade 70 | |
| CD 70 | Manganese-Silicon,Normalized | A537/A537M Class 1 |
| CD 80 | Manganese-Silicon,Quenched and Tempered | A537/A537M Class 2 |
| CF 65 | Nickel Steel | A203/A203M Grade A |
| CF 70 | A203/A203M Grade B | |
| CF 65 | A203/A203M Grade D | |
| CF 70 | A203/A203M Grade D | |
| CG 100 | 9% Nickel | A353/A353M |
| CH 115 | A553/A553M Type 1 | |
| CJ 115 | Alloy Steel,Quenched and Tempered | A517/A517M Grade A |
| CJ 115 | A517/A517M Grade B | |
| CJ 115 | A517/A517M Grade E | |
| CJ 115 | A517/A517M Grade F | |
| CJ 115 | A517/A517M Grade H | |
| CJ 115 | A517/A517M Grade P | |
| CK 75 | Carbon-Manganese-Silicon | A299/A299M Grade A |
| CP 85 | Alloy Steel,Age Hardening,Quenched and Precipitation Heat Treated | A736/A736M Grade A,Class 3 |
