The Hebei qian chen steel pipe limited company produces the beautiful sign series seamless steel pipe The spiral steel pipe, the seamless steel pipe and the ERW steel pipe, have the domestic advanced spiral seam two-sided submerged-arc welding steel pipe production line, the hot rolling steel pipe production line, expands the tube production line. Product: Seamless 管型 □5--820 spiral □19mm-1820mm; Seamless Phi 32mm- Phi 630mm, wall county 5mm-12mm20 # hot rolling steel pipe. The product sells to national 27 provinces, the city, the autonomous region _ more than 000 sales mesh points, and exports Southeast Asia...