Hello friends~ We manufacture and offer the best quality of screws and barrels for Extrusion machines. We provide professional CAD drawing design and dimensional mapping. Provide you with as much service as possible. Our bimetallic screws and barrels could let you use more time for processing. We can offer with these models and others models, please just contact with us for confirming the details :) Bimetallic extruder double screws barrel pvc pipe Extrusora bimetálica doble tubos tubo de pvc barril Double screws barrel specification: 45/97,51/105, 55/110, 65/132, 80/156, 80/172, 92/188.(We also can design and produce screw and barrel as per customers' request.) Advantages of Bimetallic conical double screws barrel for pvc pipe extruder machine: 1.Advanced Io-nitriding Technology 2.Anti-corrosion and Wear-resisting Duplex Metal Spraying Technoloy 3.We uses special alloy powders being sprayed and welded on the screw's ridge/flight,and uses different alloy and welding methods…