small steel pipe seamless
PIC-(small steel pipe seamless)
small steel pipe seamless

Our comany Produce and full stock for API 5L B, ASTM A106 GRB, ASTM A53 GRB.small steel pipe seamless pips and large sizes pipes.
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Wall thickness and Seamless pipe's theory weight
|
Carbon steel fluid pipe tolerance.
Type of steel tube | Steel tube size mm |
Deviation | ||
Ordinary grade | Senior | |||
Hot rolling (extrusion, expansion) tube | Outside diameterD | All | +1%(Minimum+0.50) | - |
Wall thicknessS | All | +15%(Minimum+0.45) -12.5%(Minimum-0.40) |
- | |
Cold drawing (rolling) tube | Outside diameterD | 6~10 | +0.20 | +0.15 |
>10~30 | +0.40 | +0.20 | ||
>30~50 | +0.45 | +0.30 | ||
>50 | +1% | +0.8% | ||
Wall thicknessS | ≤1 | +0.15 | +0.12 | |
>1~3 | +15% -10% |
+12.5% -10% |
||
>3 | +12.5% -10% |
+10% | ||
Note: the outer diameter is not less than 351mm of the thermal expansion tube, the wall thickness allows the deviation of +18% |
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