... .8-3mm, 1-4mm)The whole production line includes: Decoiler, shear & welder, accumulator, forming, HF welding & sizing machine(feeding, forming, seam guide, HF ... , zinc-patching if galvanized strip, cooling, sizing, straightening, speed measuring), flying saw, roll table and packer. 50/76 High Frequency Welded Pipe Production line