... control 5 colour lines HDPE Water supply Pipe machine line Material adopted: PE,PP,PB,PERT,ABS ... Technology5 ,We adopt 2Screw Extruders,1 is for pipe extrution , the other for the colour line6, ... sleeve ensures fast cooling speed and molding of pipe. Its material is stainless steel.2,Spray ... Long cooling unit ensures high efficiency cooling, Unique pipe line design shorten the cooling length.3,Haul-off ...