... 32-76mm) x (0.8-3mm, 1-4mm) 50/76 welded pipe production line produces welded pipes(20-50mm ... shear & welder, accumulator, forming, HF welding & sizing machine(feeding, forming, seam guide, HF welding, squeezing, bur-scraping, zinc-patching if ... galvanized strip, cooling, sizing, straightening, speed measuring), flying saw, roll table and packer. 50/ ...