Specification :

We are a professional manufacturer of screw and barrel that has been in this line for 10 years, we can supply and design all kinds of screw& barrel according to your requirments.

The parallel twin screw and barrel for extruder in many specifications.
The parallel twin screw' s Abrasion resistant and corrosion resistant.

1. The parallel twin screw' s material:
1) : 38CrMoALA ( JIS SACM645)
This kind of material is applicable to double alloy and common molding screw
2) : 9Gr18MoV
3) : 42CrMo

2. Technics:
1) : Heat-treatment
2) : Nitriding-treatment
3) : Spray bimetallic-alloy coating.

3. Technical parameter:
1) : Depth of Nitration Layer: 0.5-0.8mm
2) : Hardness of Nitration: 900-1000HV
3) : Fragility of Nitration: Less than grade 1
4) : Roughness of the surface: Ra0.4
5) : Straightness of the screw: 0.015mm
6) : Surface hardness of Nitrated Cr coating Layer: > = 950Hv
7) : The thickness of Chrome-plating layer: 0.025-0.085mm
8) : Depth of alloy Layer: > 2m.

Our main products are screws & barrels, parallel twin screws & barrels, conical twin screws & barrels, bimetallic screws & barrels as well as screws & barrel accessories. They are widely used in injection molding machines, extruders, rubber processing machines and other plastic and rubber machinery.