... 3)Length:R1,R2,R3 4)Standard:ASTM/DIN/API... oil casing steel pipe 1)OD:6-1200mm 2 ... :R1,R2,R3 4)Standard:ASTM/DIN/API...Special Pipe: API Pipewe export API 5L oil pipes to Europe, North America ... :20#,35#,45#,20G,20MnG,20A,A106B,A106C,ST45.8-III,12CrMo,15CrMo,35CrMo,12Cr1MoV,Cr2Mo,12Cr2Mo,Cr5Mo,A335P12 ... ,STPA26,13CrMo44,10CrMo910,12CrMo195 and so on.Technical Standard:API 5LB,ASTM A 106 GR.B,ASTM A53 GR ...