parrel twin screw and double hole cylinder

Description

Super-hard Parrel Twin Screw&Double Hole Cylinder *****:*8CrMoAlA Nitriding treatment, Surface hardness:HV>**0 Nitriding depth:0.**0.8mm 2.Base material:*8CrMoAlA, Special alloy is welded on the flight of screw, prolong life of screw. ***** wearing parts of barrel made from anti-wear alloy can be improved abrasion performance 4.We can alloy (such as steel casting)in shallow holes in the surface layer of high abrasion resistance, high resistance to corrosion of the alloy layer to prolong the use of the product. ***** compressor ratio of the screw can be properly designed according to the different formula