50/76 welded pipe production line produces welded pipes(20-50mm, 32- ... -3mm, 1-4mm) 50/76 welded pipe production line produces welded pipes(20-50mm, 32-76mm) x ... (0.8-3mm, 1-4mm)The whole production line includes: Decoiler, shear & welder, accumulator, forming, HF ... , HF welding, squeezing, bur-scraping, zinc-patching if galvanized strip, cooling, sizing, straightening, speed measuring), flying saw ...