1, manufacturer 2,size range:20x20-200x200mm 3,good quality and competitive price 1, Name: pre galvanized square steel pipe all sizes/specification2, Standard: GB/T6728, BS EN10219-2006, BS EN10296, BS1139, JIS G3445, JIS G34443, Material: Q195-Q2354, Size: 20x20-200x200mm5, WT: 0.8-2.3mm6, Length: 5.8m,6m,9m,12m; according to client's request7, Packing: in bundles; covered with pvc sheet8, ...