
Durable Food Grade Rubber Plastics Extruder Screw and Barrel for PVC Board Twin Screw Barrel. Custom Material Options: Available in 38CrMoAla, 40Cr, SKD61, D2, and other specialized alloys. High Hardness Nitriding: Nitriding hardness reaches HV850-1000 with a depth of 0.45-0.7mm. OEM/ODM Customization: Full customization support for materials, hardness, and surface roughness. Dual Alloy Technology: Dual alloy hardness HRC50-65 with depth of 0.8-2.0mm for durability. ISO9001 Certified Quality: Manufactured under ISO9001 systems with rigorous inspection protocols. Advanced CNC Machining: Utilizes state-of-the-art CNC equipment for high-precision manufacturing. Lifetime Technical Support: Comprehensive after-sales service including spare parts and engineering support.