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Standard ASTM A106, ASTM A53, API 5L Gr.B, DIN17175,DIN1629 Material ASTM A106B, ASTM A53B, ST52, ST37,ST44,ST45.....
Outer diameter 20mm-610mm
Wall thickness 2mm-60mm
Tolerance Control with in the standard, OD:+-1%, WT:+-10%
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