Mounds processing plant seamless steel pipe spot ---- my company specializes in producing thermal expansion pipe, spiral steel pipe, high frequency welded pipe, and annual distribution Baotou Steel, Tianjin Steel and other steel mills in the posterior wall of seamless steel pipe, I plant a double-sided submerged arc The welding process is second to none in North China, the technical staff of 35 people, the thermal expansion pipe equipment unit is a German import unit, the product error is small, accurate scale. The public are welcome to visit and negotiate.