Diameter: Φ Φ 200 ~ 62
Length ratio: L/D: 18~25.
Screw compression ratio is designed according to different raw materials and different products.
It can process PVC pipe, profile, sheet (sheet), modification and soft and hard PVC granulation.
Hardness: HV: greater than or equal to 290.
Hardness of nitride: HV:950~1000.
Nitriding depth: 0.45~0.7mm.
Brittleness of nitrogen: less than or equal to one.
Surface roughness: Ra0.4.
Screw straightness: 0.015mm.
Chromium plating thickness after nitride: greater than or equal to 900HV.
Chromium plating thickness: 0.05~0.10mm.
Double alloy hardness: 60-70.
Alloy thickness: 0.8~2.0mm.