Shanghai cold-formed steel square tube, square tube stock price, square and rectangular tube business 1.5.2.2.1.1.6.6.5.1.1 famous Shanghai Railway Hao Industrial Co., Ltd. supply Q345B square tube, 16Mn square pipe, large diameter thick-walled square tube Seamless square and rectangular tube, galvanized square steel pipe and other products. Low-alloy square tube 100 * 100 * (4-10mm) low-alloy square tube 150 * 150 * (5-20mm) low-alloy square tube 250 * 250 * (5-25mm) low-alloy square tube 180 * 180 * (5- 18mm) low-alloy square tube 280 * 280 * (5-25mm) low-alloy square tube 356 * 356 * (5-25mm) low-alloy square tube 200 * 200 * (5-20mm) low-alloy square tube 300 * 300 * ( 5-25mm) low-alloy square tube 350 * 350 * (5-25mm) low-alloy square tube 220 * 220 * (5-20mm) low-alloy square tube 400 * 400 * (5-25mm) low-alloy square tube 500 * 500 * (5-25mm) low-alloy square tube 500 * 300 * (5-25mm) low-alloy square tube 100 * 180 * (5-14mm) low-alloy square tube 250 * 150 * (5-20mm) low-alloy square tube 300 * 200 * (5-25mm) low-alloy square tube 300 * 100 * (5-22mm) low-alloy square tube 350 * 200 * (5-25mm) low-alloy square tube 300 * 150 * (5-22mm) low-alloy square tube 350 * 250 * (5-25mm) low-alloy square tube 350 * 300 * (5-25mm) low-alloy square tube 300 * 200 * (5-25mm) low-alloy square tube 400 * 250 * (5-25mm) Low alloy square tube 400 * 600 * (5-25mm) low-alloy square tube 400 * 200 * (5 * 25mm) low-alloy square tube 450 * 250 * (5-25mm) low-alloy square tube 500 * 200 * (5-25mm ) large diameter, thick-walled Rectangular Pipe is our flagship product, to fill some gaps at home and abroad, our products are widely used in large steel construction, machinery manufacturing, shipbuilding and other industries.