This specification cover electric-fusion-welded austenitic chromium-nickel stainless steel pipe suitable for corrosive or high-temperature service, or both, or for general applications. The pipes come in five classes.
Class1:
Pipe is double welded by processes employing filler metal in all passes and are completely radiographed.
Class2:
Pipe is double welded by processes employing filler metal in all passes without radiography
Class3:
Pipe is single welded by processes employing filler metal in all passes and are completely radiographed.
Class4:
Same as Class 3 except that the weld pass exposed to the inside pipe surface may be made without the addition of filler metal.
Class5:
Pipe is double welded by processes employing filler metal in all passes and is spot radiographed.
Size | ODB | WallCDOver/ | Cut | OvalityB Double Outside Diameter Tolerlance |
Under 1/2 | 0.005 | 15 | +1/8 –0 | less than 0.015 |
1/2 to 1-1/2 excl. | 0.005 | 10 | +1/8 –0 | less than 0.065 |
1-1/2 to 3-1/2 excl. | 0.010 | 10 | +3/16 –0 | less than 0.095 |
3-1/2 to 5-1/2 excl. | 0.015 | 10 | +3/16 –0 | less than 0.150 |
5-1/2 to 8 excl. | 0.030 | 10 | +3/16 –0 | less than 0.240 |
8 to 8-5/8 excl. | 0.045 | 10 | +3/16 –0 | less than 0.300
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