Thermal expansion seamless steel pipe production base, more than 1,000 tons of inventory stock sales, ---- I company specializing in the production of thermal expansion pipe, spiral steel pipe, high-frequency welded pipe, the annual distribution of the posterior wall of the Baotou Steel, Tianjin Steel and other steel mills without pipe joints, I plant double submerged arc welding process in North China's premier, 35 technicians, thermal expansion pipe equipment unit is a German import unit error is small, accurate scale. The public are welcome to visit and negotiate. Tel 0317-6083098