When it comes to high-output plastic compounding and extrusion, the extruder parallel twin screw barrel plays a critical role in ensuring consistent mixing, pressure stability, and long service life. Whether you’re producing engineering plastics, color masterbatches, or polymer blends, choosing the right barrel configuration is essential.
In this article, we’ll explore the features and applications of parallel twin screw barrels, why they’re favored for industrial compounding, and how sourcing from China can offer an optimal balance of performance and price.
🔍 What Is an Extruder Parallel Twin Screw Barrel?
A parallel twin screw barrel consists of two screws that rotate inside a barrel with a uniform diameter along its entire length. This contrasts with conical designs, where the screw diameter tapers.
Parallel twin screw barrels are widely used in:
- Co-rotating twin screw extruders
- PVC pelletizing lines
- Engineering plastic compounding (PP, PE, ABS, PC, PA, PBT)
- Biodegradable material and filler processing
- Masterbatch and additive production
⚙️ Key Features of Parallel Twin Screw Barrels
- Uniform diameter design: Ensures constant torque and throughput
- Modular barrel sections: Easier to maintain, replace, and configure for different processing tasks
- Bimetallic lining or nitriding: Protects against wear and corrosion
- Precision manufacturing: Tight tolerances for inner hole straightness and concentricity
- Segment types: Feeding, melting, mixing, venting, and discharge zones
🇨🇳 Why Choose China for Parallel Twin Screw Barrels?
China has become a leading global supplier of extruder parallel twin screw barrels, serving top brands and OEMs. Benefits include:
✅ Advanced Manufacturing
High-precision CNC machining, alloy bimetallic centrifugal casting, and in-house quality inspection.
✅ Competitive Pricing
Compared with European or Japanese suppliers, Chinese manufacturers offer equal quality at more affordable prices—ideal for large production lines or OEMs.
✅ Customization Options
Made-to-order based on machine brands like Coperion, Leistritz, KraussMaffei, Toshiba, or customized barrel lengths and liner types.
🏭 Recommended Supplier: Zhoushan Juyuan Machinery Co., Ltd.
Zhoushan Juyuan Machinery Co., Ltd. is a professional manufacturer of parallel twin screw barrels and screws with over 20 years of experience.
Why choose Juyuan?
- Specializes in co-rotating parallel twin screw barrel systems
- Barrel materials: 38CrMoAlA, Cr12MoV, or bimetallic alloy lining
- Nitriding depth: ≥ 0.5mm | Bimetallic hardness: HRC ≥ 60
- Supports OEM service and international export
- Serves customers in Europe, Southeast Asia, Russia, South America
🔗 Related blog: Twin Screw Extruder Spare Parts in China
📐 Typical Technical Specs
| Parameter | Value / Range |
|---|---|
| Screw Diameter (Ø) | 20mm–200mm |
| L/D Ratio | 32:1 – 56:1 |
| Barrel Type | Modular / segmented |
| Material | 38CrMoAlA / bimetallic alloy / tool steel |
| Surface Treatment | Nitriding, hard chrome plating, bimetallic |
| Application | High-speed extrusion, compounding, recycling |
📦 Packaging & Delivery
- MOQ: 1 set
- Lead Time: 15–30 days depending on specifications
- Packing: Wooden crates with anti-rust film and oil
- Shipping: FOB Ningbo / Shanghai, CIF or DDP available
🌍 Industries That Use Parallel Twin Screw Barrels
- Plastic compounders and masterbatch manufacturers
- Recyclers of PP/PE with CaCO₃ or talc filler
- WPC (Wood-Plastic Composite) extrusion lines
- Cable compound and insulation material producers
These industries rely on parallel twin screw barrels for stable mixing, high-speed throughput, and consistent output quality.
🌐 Useful Resources
📩 Request a Quote Today
Looking for a durable and cost-effective extruder parallel twin screw barrel from China? We’re ready to assist you with fast quotations, custom designs, and worldwide delivery.
📧 Email: cxj.job@gmail.com
🌍 Website: https://juyuan-machinery.com
📱 WhatsApp: +86 13905808474
Upgrade your extrusion performance with barrels that are built to last — contact Juyuan today!