Parallel bimetallic extrusion screw barrel for plastic extrusion machine Diameter Φ60mm-250mm Designing Screw structure and compression ratio can be designed according to different products & different output re quirement. Materials 38CrMoAlA (JIS SACM645) SKD61 Application Suit for pipe , sheet , profile and other plastics products Nitride Case Depth 0.5mm-0.8mm Technology 1)Longer time Gas Nitriding treatment 2) Special corrosion & abrasion alloy (bimetallic) 3)Tungsten carbide 4)Cobalt base alloy 5)Stainless steel 6)GH113 nickel based alloy Nitride Hardness 950-1020HV Packing Wrapped up by film in wooden case Nitride Brittleness ≤Grade One Payment Term T/T , L/C , WESTERN UNION Surface Roughness Ra0.4um Delivery Term 30 working days Screw Straightness 0.015mm Port Departure Shanghai/Ningbo Alloy Hardness HRC58-62 Min. Order 1 set Alloy Depth 0.5mm-0.…