Parallel Twin Screws
Zhejiang Zhongyang Screw Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of parallel twin screws in China. With abundant experience, we warmly welcome you to buy durable parallel twin screws from our factory. All customized products are with high quality and competitive price.
Parallel Counter‑Rotating Twin Screws are designed for high output and melt uniformity in extrusion and compounding. With longer effective lengths than conical screws, they provide extended processing time to shear and homogenize the melt, making them ideal for demanding applications.
Technical Specifications
|
Item |
Specification |
|
Screw diameter |
Φ20-Φ330mm |
|
L/D ratio |
L/D=16-35 |
|
Materials |
38CrMoAlA(SACM645), 31CrMoV9(1.8519), 34CrAINi7(1.8550),Alloy sleeve:4Cr5MoSiV1(SKD61, H13), C2,D2 |
|
Surface Roughness |
Ra0.4um |
|
Lineanty |
0.015mm/m |
|
Nitrided hardness |
HV850-1000 |
|
Nitrided Depth |
0.5-0.8mm |
|
Chrome coating thickness |
0.03-0.05mm |
Complete Twin Screw Solutions
New Designs
Optimized for PVC, profiles, pipe, sheet, and more
Rebuilds & Relines
Extend service life and reduce downtime
OEM Replacements
Precision-fit for all major brands
- PVC pipe and conduit extrusion
- Window and door profiles
- Siding, fencing, and decking
- Rigid PVC sheet and foam PVC
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