... STD, SCH40, SCH60,SCH80S, XS, SCH80 etc.Length1m-24mStandardAPI 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795, ... STK400, STK490, STK500,STK540,STPG370, STPG410 etc.CertificateEN10217, EN10219, API 5L PSL1/ PSL2, KS 4602, KS3583, GB/T9711.1/2, ... Max Length 21 meters; Max Diameter 2600mm;TestChemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation ...