... PE,PP pipe dieSpecification :200-630mmType of die :basket,sprial,co-extrusion composite dieCharacter of die :flow speed of melt is reached ... ,so no flow mark left .2,low pressure ,high extrusion capacity ,the production can be up to 80%of the ... calibrating sleelve.PVCpipe dieSpecification:16-630mmType of die :basket,sprial,co-extrusion composite die, Made of stainless steel or bronze water jacket ...