... -2002GB/T 14975-2002 -Decorative Stainless Steel 4-426×1-40 Structural Pipe 10,20,35,45,Q23516Mn Q345BGB/T8162-2008 ... A335mASTMA213/A213mhigh-temperature resistant,Low temperature-resistant, corrosion-resistant Seamless pipe for Petroleum, chemical, electric power,Boiler industry16-824×2- ... manufacturing- tube for boilers and overheating14-426*1.5-4.5 line pipe 5L GR.B, X52,X60 API-for petroleum,natural ...