... in 3-5 times in comparison with that of the electrical heating or flame heating device. The imported far-infrared inspector ... the sound and light alarm and the defect recorder. The extrusion line can be changed into two lines for PEX, PE ... for inner pipeSJ65/30BSJ90/25BExtruder for outer pipeSJ65/25BSJ65/30BExtrusion die, mouldΦ16,Φ20,Φ25,Φ32Φ16,Φ20,Φ25,Φ32,Φ40 ...