August 15, 2017
high frequency electric weld (ERW) line pipe and standard electric resistance weld pipe products are smoothly finished and thin-walled. They are produced by continuously forming coiled hot rolled strip into a tube and welding the longitudinal seam using high-frequency electric resistance welding. Size:(ERW, HFI, EFW) Outer Diameter: 6mm-610mm (1/16″-24″) Wall […]