... (mm)Annual output/T1Oil pipeAPI5CT-2005J55,N80,L80,C90,P11060.3~114.3×4.24~16×6100~12800850002Oil casing PipeAPI5CT-2005J55,N80,L80 ... 146302100003Line pipeAPI5L-2007B,X42,X46,X52,X60,X65,X70,X8060.3~168.3×3.6~22.2×6000~12000200004Transmission fluid tubeGB/T8163-199910 ... fertilizer equipmentGB 6479-200010,20,16Mn,15Mnv,12CrMo,15CrMo60~168.3×3.5~25×4000~1200090009Structural use of seamless steel tubesGB/ ...