... , SCH60, SCH80S, XS, SCH80 etc. Length 1m-24m Standard API 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795, BS1387 ... , STK400, STK490, STK500, STK540,STPG370, STPG410 etc. Certificate EN10217, EN10219, API 5L PSL1/ PSL2, KS 4602, KS3583, GB/T9711.1/2 ... - line pipe for use in pipeline transportation systems in the petroleum and natural gas industries -for use as casing and tubing ...