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)Carbon welded steel pipe of LSAW,SSAW and ERW;2)Mateial: SPHC,08AL,08F,HG5,DF08,Q195,Q215,Q235,Q345,STK500, or per the client's demand;3)Standard :ASTM,API,JIS,DIN,EN,BS,GB;4)Galvanize: Pre galvanize or hot dip galvanize A53 HDG Steel Pipe