... steel pipe 2.Application: Structure Pipe 3.Standard: ASME, ANSI, ASTM 4.Section Shape: Round seamless carton steel pipespecificaton:standard ... :ASTM ,ASME ,DIN, USE:Petroleum,chemical,power,gas,metallurgy,shipbuilding, ... to the standard of GB /ASTM / ASME / DIN / JISASTM B 16.9 /16.11 B 16.28 JIS B 2311/2220 DIN2617/2616/2615Types ...