Want to know more information about our products ? Warmly welcome to contact us by below ways: Mobile/wechat: +86-13567686776 QQ: 3061421760 Catrina will be very happy to answer your questions in 24 hours. vented single extruder screw barrel for pvc Diameter Φ15mm-350mm Designing Screw structure and compression ratio can be designed according to different products & different output requirement. Materials 38CrMoAlA (JIS SACM645) SKD61 Application Suit for pet,pe, pvc and other polymer plastic recycling. Nitride Case Depth 0.5mm-0.8mm Technology 1)Longer time Gas Nitriding treatment 2)special anti-wear & abrasion alloy (bimetallic) 3)tungsten carbide 4)cobalt base alloy 5)stainless steel 6)Gh113 nickel based alloy Compared to other supplier, OSD advantages 1.Advanced Nitriding Technology 2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy 3. we uses special alloy powders being s…