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Nst Welding. Смотреть видео: Single Layer Fillet Weld FCAW SF 1A Welding Demo By NST NSWE Flux Cored Welding Wire, Single Sided Welding With Ceramic Backing NST Kerback Welding Demo NSWE FCAW Wire, NST Demonstrates How To Weld In Horisontal Position With NSWE Metal Cored Wire, MCAW SM 47A Vertical Welding Demonstration By NST NSWE Metal Cored Welding Wire.