... European Technology5 ,We adopt 2Screw Extruders,1 is for pipe extrution , the other for the colour line6, Lower ... sleeve ensures fast cooling speed and molding of pipe. Its material is stainless steel.2,Spray cooling ... Long cooling unit ensures high efficiency cooling, Unique pipe line design shorten the cooling length.3,Haul-off ... of planetary unit, With ultra silent & enforced sucking system.