Bimetallic parallel twin screw barrel for PVC pipe extruder

   Bimetallic parallel twin screw barrel for PVC pipe extruder Diameter 65-90mm Min.Order 1 set Materials   38CrMoAIA 42CrMo(JIS SCM440) 9Cr18MoV CW6Mo5Cr4V2 SKD61   Discount  Available Application  PVC,UPVC,PVC-U,ABS  Sheet,Profile,Pipe   Payment  Term T/T, L/C Technical  Process   1.Rough Machining 2.Quenching  and Tempering 3.Finish Machining 4.Nitriding 5.Spraying and welding with alloy power 6.Screw polishing   Technological  Parameter  Roughness...