... -5-10-12-14-16-18-20Mainly used in boiler pipe & welded pipeCold Rolled CoilQ195, Q215, Q235, Q275, Q345ASTM,GB,JIS ... /T8162-19990.5-200mm, 6-1240mmUsed in general and mechanical structure Alloy Steel PipeDin2391 17 Cr3, ST52, A335P11,P5,P910,P22 ... ,ASTM20-165mm,0.5-16mmWidely used in the construction,pipe of industrial,water pipe,fence equipment,telecommunication tubes as well as green ...