Standard | Steel grade | Chemical composition (%) | Mechanical behavior | Elongation (%) | |||
C | Mn | PS | Tensile strength (MPa) | Yield strength (MPa) | |||
ASTMA179 | A179 | 0.06 ~ 0.18 | 0.27 to 0.63 | ≤ 0.035 | ≥ 325 | ≥ 180 | ≥ 35 |
Tolerance:
Type of pipe | Diameter ( D ) | Thickness ( S ) | ||
Outside Diameter (mm ) | Tolerance (mm ) | Outside Diameter (mm ) | Tolerance (mm ) | |
Hot-rolled tubes | ≤ 101.6 | +0.4 ~ -0.8 | 76 ~ 168.3 | +28% ~ 0 |
> 101.6 ~ 168.3 | +0.4 ~ -1.2 | |||
Cold drawn tubes | < 25.4 | + 0.10 | ≤ 38.1 | +20% ~ 0 |
25.4 ~ 38.1 | + 0.15 | |||
> 38.1 - < 50.8 | + .20 | > 38.1 | +22% ~ 0 | |
50.8 ~ < 63.5 | + 0.25 | |||
63.5 ~ < 76.2 | + .30 | |||
76.2 ~ 101.6 | + .38 | |||
> 101.6 ~ 190.5 | +0.38 ~ -0.64 | |||
> 190.5 ~ 228.6 | +0.38 ~ -1.14 |