good quality and low price API 5L Gr B Seamless Carbon Steel Pipe oil casing pipe 1.OD: 30-397.3mm 2.WT: 5.21-11.43mm 3.Material:A25,A,B,X42,X46,X52,X56,X60,X65,X70,X80 H40 J55 K 55 M65API 5L Gr B Seamless Carbon Steel Pipe 1.Item: petroleum casing pipe2.Standard: API5L AND API5CT3.Grade: A25,A,B,X42,X46,X52,X56,X60,X65,X70,X80 H40 J55 K 55 M65 N80 L 80 C 90 T 95 P110 Q125 CS-90 SCS-95 SCS-80 TCS ...