Tolerances according to ASTM A530/A530M, ASTM A999/A999M (ASME SA) |
| | | |
Weight | Outside diameter | Wall thickness |
All standards:
NPS 12 and under
- 3,5% +10%
over NPS 12
-5% +10%
Upon agreement
(ASTM A999:
with minimum wall thickness, max +16%) | 1/8 - 1 1/2" (10,3 - 48,3 mm): | - 1/32 (0.031) + 1/64 (0.015) | All standards:
- 12,5%
+ limited by weight*
Upon agreement
(ASTM A999:
Minimum wall thickness:
There shall be no variation under the specified WT) |
| - 0,8 + 0,4 mm** |
| |
1 1/2 - 4" (48,3 - 114,3 mm): | - 1/32 (0.031) + 1/32 (0.031) |
| - 0,8 + 0,8 mm |
| |
more than 4 - 8 (114,3 - 219,1): | - 1/32 (0.031) + 1/16 (0.062) |
| - 0,8 + 1,6 mm |
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