Pipe welding machines, are suitable in welding plastic pipes of PPR pipes and PE pipes, all the welding machines are equipped some certain moulds of different size within Φ20, Φ25, Φ32, Φ40, Φ50, Φ63, Φ75, Φ90, Φ110, Φ160 .products are of 800W, 1000W, 1200W, 1400W, 1500W and so on, moreover of their applying voltage 220V and 110V, all the moulds are covered with the world famous coatings American Teflon, equipped one temperature control of its range 0-300^oC or 260±5^oC,two switches, a heating board processed with polishing technology, and some other appendixes, some welding machines are even equipped the liquid crystal device to control the applying  temperature.