Specification：

OD:21-610mm     WT:1-80mm
Length:5-12m as requirement

Standard: ASTM A500-98  ASTM A501-98  ASTM A519-98  ASTM A53-98  ASTM A192  ASME S192  JIS G3441   JIS G3441   JIS G3452   JIS G3454  DIN 1629

Main Steel Grades: 10   20  35  45  16Mn  12CrMo  15CrMo  12Cr1MoV  etc

Chemical Composition & Mechanical Properties