ống hàn

Thép hộp vuông 100 x 100 x 4ly , 6ly, 8ly, 10ly x 6m 125 x 125 x 4ly , 6ly, 8ly, 10ly x 6m 150 x 150 x 4ly , 6ly, 8ly, 10ly x 6m 200 x 200 x 6ly, 8ly, 10ly x 6m Thép hộp chữ nhật 125 x75 x 3,2ly,4,5ly ,6ly,9ly,12ly x 6m 150 x75 x 3,2ly,4,5ly ,6ly,9ly,12ly x 6m 150 x100 x 3,2ly,4,5ly...