... control ppr Pipe production line Material adopted: PE,PP,PB,PERT,ABS etc. Main feature:1,High automation degree, 2,stable and reliable ... stannum bronze calibration sleeve ensures fast cooling speed and molding of pipe. Its material is stainless steel.2,Spray cooling ... tank: Long cooling unit ensures high efficiency cooling, Unique pipe line design shorten the cooling length.3,Haul-off unit: special ...