... mild steel SHS,RHS,CHS ERW Mild Steel Square Pipe SHS RHSTianjin Haiyunda Metal Material Co.,Ltd.Rectangular hollow section/Square steel pipe,Rectangular pipeDimensionSquare pipe:15*15-600*600Rectangular pipe ... AustraliaCapacity10000 metric ton per monthOther ProductOval steel pipe/tube,Welded pipe/tube,Galvanized pipe/tube,Steel strip,Hollow section pipe/tube/channel(C,U,V,H ...