Our manager commitment to cooperate with you and win-win, high-quality spiral steel pipe shelf --- Our company specializes in the production of thermal expansion of steel pipe, spiral steel pipe, high-frequency welded pipe, annual distribution of the posterior wall of Baotou Steel, Tianjin Steel and other steel seamless steel pipe, factory sided submerged arc welding process is second to none in North China, 35 technicians, thermal expansion pipe equipment unit is the unit imported from Germany, the error is small, precise scale. Welcome to come to visit and negotiate. Tel: 6083098