... W.T.0.5-30mm 2. ZINC 40-140um or 280-900g/m2 3. Strong productivity GB/T 3094 erw ... A 53, EN 10210, EN 10219, JIS G 3466, GB/T 6728, BS 1387, BS 6323, IS : 3074, IS ... so on.Our Popular Size (Hot Sales!) GB Main Products (Specification)Rectangle pipe SpecificationThicknessSpecificationThickness20*301. ... .75-5.080*401.5-4.0100*2002.75-5.080*601.7-5.0200* ... .75-5.070*701.7-5.0200*2002.75-1475*751.7-5.0250*2502. ...