Counter-rotate parallel twin screw

The screw of the series consists mainly of two parallel cylindrical screws, which rotate to the opposite direction. Parallel double screw rotational speed is low, less heat, shear stability of the materials in the barrel, uniform, screw for material conveying ability is strong, have good exhaust effect at the same time, is conducive to the stability of product quality.

Specification

PX-φ45/2-φ150/2

（Length/Diameter Ratio）:L/D=18~40

The main applicatons

Includes PVC pipe & profile extrude, PP/PE sheet product, PET sheet extrusion without dryer and crystallizer.

PVC profile(Door & window) / WPC(PVC,PE) / PVC foam board / PVC pipe / PVC compound etc

 Material:High quality 38CrMoAlA

 Process:Advanced nitriding & bimetallic process

Hardness After Hardening & Tempering:HB280-320

Nitrided Hardness:HV900-1000

Nitrided Case Depth:0.45-0.8mm

Nitrided Brittleness:Less than Grade 2

Surface Roughness:Ra 0.4

Screw Straightness:0.015mm

Alloy Hardness:HRC 50-65

Alloy Depth:0.8-2.0mm

Hardening Hardness:HB280-320

Nitrided Hardness:HV900-1000

Nitrided Case Depth:0.45-0.8mm

Nitrided Brittleness:Less than Grade 2

Surface Roughness:Ra 0.4

Screw Straightness:0.015mm

Application:plastic pvc pipe/profile/foam board