... 1/2 high calcium buckle, 50-400 high calcium pipe, 50-300 high calcium profile, soft PVC sheet, ... PVC etc.PP.PE.ABS.PVC. raw material, pelletzing, pipe, profile, sheet etc.TECHNICAL DATA:Depth of nitration case ... of screw. Easy wearing parts of barrel feed inlet made from imported anti-wear alloy can be improvde ... aBigImageSrc } ); } )(); Conical Bimetallic Twin Screw and Barrel for PVC pipe/profile