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Quick Details

  • Place of Origin: Zhejiang, China (Mainland), Zhejiang, China (Mainland)
  • Brand Name: shenglong screw barrel, Shenglong
  • Model Number: parallel screw and barrel
  • screw barrel: screw barrel
  • parallel screw and barrel: parallel screw and barrel

Packaging & Delivery

Packaging Details wooden case
Delivery Time 25-40days


We specilized in design and manufacture of a full series of screws and barrels, applied for various extruding machines and plast

Parallel twin screw and barrel

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.



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China (Mainland) | Manufacturer, Trading Company
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