... abasic materials for industries or construction 1 galvanized pipe hollow structural section,1 hollow pipe section1.ASTM A53,ASTM A500, ASTM A513, 2 ... 12metersSdandard: GB,ANSI,ASME,ASMT,JIS,DIN,BS,ENSteelGrade: Q195,Q215,Q235,Q345,10#,20#,ASTM,A160,GRBPackaging: Plastic Cap,Inbunddle and ...