API 5L Line Pipe Schedule
July 9, 2022Quality requirements for seamless steel pipes
July 15, 2022Chemical composition ,Mechanical properties,Bending test ,Hydrostatic test, Flattening test, Bending test, Hydrostatic test
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ASTM A589 BS 1387 BS 3601 BS 3602 BS 1775 ASTM A135 ASTM A178 ASTM A252
JIS G3445 JISG3444,JIS A5525,JIS G3474