galvanized rectangular steel tube 1)Product Name:galvanized square steel tube and rectangular tube2)Place of Origin:China(Mainland), Hebei3)Classification: ERW4)Thickness:0.7mm-2.5mm5)Specifications: Rectangular tube20x25,20x30,20x3820x40,20x50,20x6030x40,30x50,30x6040x50,40x60,40x8025x40,25x50,25x6025x38,21x44,38x75 Rectangular steel pipe