... SCH60,SCH80S, XS, SCH80 etc.Length1m-24mStandardAPI 5L, API 5CT, ASTM A53, ASTM A252, ASTM A500, ASTM A795 ... class, prime, newly produced, secondary , stock etc.Material/Steel gradeA, B, X42, X46, X52, X56, ... , L415M, L450M,L485M, L555M, L625M, L690M, H40, J55, K55, M65, L80, C95, N80,Q125, S235GT, ... STK500,STK540,STPG370, STPG410 etc.CertificateEN10217, EN10219, API 5L PSL1/ PSL2, KS 4602, KS3583, GB/ ...