The Industrial Production Group of Rothengaran Parseh largest producer of polyethylene welding machines diameters up to 2400 mm to pressure 32 Atmospheres with the latest technology and user-hydraulic and CNC Plastic welding machines Rothengaran Parseh according to the standard ISO 12176-1 and standard DVS2201 produced. Plastic welding machines to be used in the water-gas-sewage pipelines and oil & petrochemical with PE80-PE100 pipes to welding methods head-to-head (Buttweld) is used.