... steel tube/pipe 1) Dimensions: 20x20mm-300x300mm 2)WT: 0.6-25mm 3) Reprocess: Perforati ASTM A554 standard stainless square steel tube ... .9,102,114,133,141,159,2192)Square pipes - Outside dimensions(mm) : 10x10,12x12,15x15,17x17,18x18,19x19,20x20,22x22,23x23 ... ,38x38,40x40,48x48,50x50,60x60,70x70,80x803)Rectangular pipes - Outside dimensions(mm) : 20x10,23x11,24x12,25x13,28x13,30x15,34x22,36x23,37x24 ...