Alloy Pipe Cr5Mo(P5、STFA25、T5、) 15CrMo(P11、P12、STFA22) 13CrMo44 12Cr1MoV P22(10CrMo910) T91、P91、P9、T9 WB36 GB5310-95 GB9948-88 ASTMA335/A335m ASTMA213/A213m DIN17175-79 JISG3467-88 JISG3458-88 ∮16-824×2-100 Ptroleum Chemical Idustry,Electric Power,High Temperature Resistant, High Pressure Boiler Pipe 20G、SA106c ST45.8/3 GB5310-95 ASTMA106-99 DIN17175-79 ∮16-824×2-65 Heat Resistant seamless Steel Pipe Ued for High Pressure Boiler Petroleum Cracking Pipe 20 12CrMo 15CrMo GB9948-88 ∮10.530×1.5-36 Petroleum Refinery Furance Tube, Heating Exchange Pipe, seamless Pipe Used in Conduit Pipe for chemical fertilizer facility 20、16Mn、Q345 GB6479-2000 ∮25-426×6-40 Chemical Fertilizer Fcility, Pipe Low or Middle Pressure Boiler Pipe 10、20 GB3087-1999 ∮10-426×2-40 Low Pressure Boiler Heating Exchange, Boiling Water Pipe,Vehicle Vent-pipes Fluid Pipe 20、Q345 GB/T8163-1999 ∮8-610×1.5-40 Fluid Transportation Structure Pipe 10、20、35、45、16Mn Q345B GB/T8162-1999 ∮6-610×1.5-40 In General Structure Pipe of Pipelines B级 API 5L ∮60-610×3-40 Petroleum,Gas transportation Hydraulic pressure Cylinder Pipe 27SiMn GB/T17396-1998 ∮70-377×12-40 Hydraulic Pressure Bracket Manage shiply 410 GB/T5312-1999 ∮14-426×1.5-4.5 Make shipping to use and manage