Shanghai Hao iron low-alloy square tube square tube factory to expand the domestic market, accelerating exports, better and faster development, more social services, manufacturers nationwide companies spot inventory galvanized square tube seamless square tube, complete specifications, price concessions, our company and shipping companies have a good relationship of cooperation, to distant customers, carpool or take the return journey shipment way, reduce procurement costs for customers. Shanghai and Jiangsu and Zhejiang and other surrounding areas of enterprises but also car delivery. Rectangular tube 40 * 80 * 2.0 rectangular tube 40 * 80 * 3.0 rectangular tube 40 * 80 * 4.0 rectangular tube 40 * 80 * 5.0 rectangular tube 40 * 100 * 40 * 2.0 rectangular tube rectangular tube 100 * 3.0 * 4.0 40 * 100 rectangle tube 40 * 100 * 50 * 5.0 rectangular tube rectangular tube 70 * 2.0 * 3.0 50 * 70 50 * 70 rectangular tube rectangular tube 50 * 4.0 * 70 * 5.0 rectangular tube 50 * 80 * 3.0 rectangular tube 50 * 80 * 4.0 rectangular tube 50 * 80 * 5.0