Galvanized welded square/round pipe Size from 20*20*1.2 to600*400*16 Standard ASTM,API,JIS,DIN,EN,BS,GB Features of galvanized steel pipe:1)Hot-rolled welded steel pipe of LSAW,SSAW and ERW;2)Mateial: Q195,Q215,Q235,Q345,16MN, or per the client's demand;3)Standard :ASTM,API,JIS,DIN,EN,BS,GB;4)Galvanize: Pre galvanize or hot dip galvanize Q235 HDG Steel Pipe