When it comes to producing high-output plastic profiles, pipes, and granules, the extruder twin parallel screw barrel is the preferred choice for many processors. With its symmetrical screw design and uniform torque distribution, it offers unmatched performance in both soft and rigid plastic extrusion.
If you’re looking for a reliable twin parallel screw barrel manufacturer from China, this guide will help you understand what to look for and why it matters.
🔧 What Is an Extruder Twin Parallel Screw Barrel?
The twin parallel screw barrel is a critical part of a parallel twin screw extruder, commonly used in PVC pipe, profile, sheet, and granulation production. Unlike conical twin screws, the parallel design features:
- Equal screw diameters from end to end
- Parallel axes for balanced force and smooth motion
- Greater surface area for plasticizing and melting
These characteristics make parallel barrels ideal for:
- Large-diameter PVC pipe extrusion
- Plastic window profiles
- Granulation of recycled PVC or WPC
- Foamed board or panel production
⚙️ Key Benefits of Twin Parallel Screw Barrels
- High Output & Efficiency
Larger screw engagement and consistent speed enable faster throughput. - Longer Life Span
Manufactured with 38CrMoAlA base steel and optionally bimetallic alloy linings for wear resistance. - Uniform Plasticizing
Ensures even melting and pressure, especially important for heat-sensitive materials like PVC. - Customization Flexibility
Barrels and screws can be tailored for various L/D ratios, heating zones, or processing needs.
🏭 Leading Supplier in China: Zhoushan Juyuan Machinery Co., Ltd.
Located in the world-renowned Zhoushan Screw & Barrel Industrial Zone, Zhoushan Juyuan Machinery Co., Ltd. is a trusted name in extruder twin parallel screw barrel manufacturing.
Why Choose Juyuan?
- 20+ years of industry experience
- OEM supplier for international brands
- Bimetallic barrel options (Ni-based alloy, HIP)
- Strict tolerance control (≤0.02mm)
- Fast delivery with full technical support
🔗 Related content: Twin Screw Barrel Types Explained
📐 Standard Specifications
| Parameter | Value |
|---|---|
| Screw Diameter | 45mm to 180mm |
| L/D Ratio | 18:1 to 36:1 |
| Barrel Material | 38CrMoAlA / Bimetallic Alloy |
| Screw Surface Treatment | Nitriding / Hard Surfacing |
| Barrel Inner Hardness | HRC ≥ 60 (alloy lined) |
| Screw Hardness | HRC 58–64 |
Barrels can be one-piece or segmented (multi-zone) for easier maintenance.
🔩 Applications of Twin Parallel Screws
These screw-barrel sets are commonly used in:
- PVC water pipe and cable conduit lines
- WPC granulation
- PVC profile and panel extrusion
- Foam sheet lines (co-extrusion compatible)
- SPC flooring substrate production
🌍 Global Reach & Export Support
Juyuan Machinery has exported twin screw barrels to over 40 countries, including:
- Germany, Italy, Poland
- Turkey, Iran, Egypt
- Brazil, Mexico, Argentina
- Russia, India, Vietnam
Packaging is seaworthy with anti-rust oil and wooden cases. Fast shipping options include FOB, CIF, and DDP.
📎 Learn More From Industry Experts
📩 Request a Free Quotation Today
Need a customized extruder twin parallel screw barrel for your extrusion line? We’re here to help with technical design, materials selection, and fast delivery.
📧 Email: cxj.job@gmail.com
🌍 Website: https://juyuan-machinery.com
📱 WhatsApp: +86 13905808474
Improve your extrusion efficiency with high-precision twin parallel screw barrels from a reliable Chinese partner. Contact us now!