Jinjia Screw | Bimetallic Screws & Barrels for Injection Molding & Extrusion Machines

About Jinjia

ZHEJIANG JINJIA PLASTICS MACHINERY CO., LTD has been dedicated to the research, development, and manufacturing of high-precision bimetallic screws and barrels for over 15 years. We serve global clients in the plastic, rubber, and petrochemical industries with customized, wear-resistant solutions.

Our mission is to deliver excellence in material science and mechanical engineering, ensuring longer service life, reduced downtime, and superior processing efficiency for your machinery.

15+ Years of Industry Experience
10+ R&D Patents
120+ Technical Experts
500+ Customized Clients Worldwide

Our Products

High-performance bimetallic components designed for injection molding, extrusion, rubber, and petrochemical applications.

Bimetallic Screw for Injection Molding Machine

High wear resistance, optimized for PVC, PP, PE, and engineering plastics.

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Bimetallic Barrel for Extrusion Machine

Double-layer alloy structure for superior abrasion and corrosion resistance.

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Bimetallic Conical Twin Screw & Barrel

Ideal for PVC pipe and profile extrusion with high torque transmission.

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Parallel Twin Screw & Barrel

SPC and 38CrMoAl materials for stable performance in plastic compounding.

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XPS Extruded Board Foaming Screw

Specialized design for polystyrene foam board production with low shear.

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Bimetallic Screw & Barrel for Rubber Machine

High thermal stability and wear resistance for rubber processing lines.

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Large Petrochemical Extruder Granulation Screw

Heavy-duty design for high-capacity polymer granulation systems.

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Accessories for Screw & Barrel Systems

Nozzles, check rings, mixing elements, and repair services available.

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Why Choose Jinjia?

Advanced materials, precision engineering, and decades of experience ensure unmatched performance.

High Wear Resistance

Bimetallic alloy layer provides 3-5x longer service life than standard components.

Precision Engineering

CNC machining ensures tight tolerances and perfect fit for all machine types.

Fast Delivery

Standard models shipped within 7-15 days; custom orders in 20-30 days.

Global Support

Serving clients in over 50 countries with technical assistance and after-sales service.

Frequently Asked Questions

Get answers to common inquiries about our products and services.

What materials are used in your bimetallic screws?

We use high-grade 38CrMoAl base material with a wear-resistant bimetallic alloy layer (typically Ni-based or Fe-based) applied via plasma spray or welding.

Can you customize screw and barrel dimensions?

Yes, we offer full customization based on your machine model, material type, and processing requirements.

What is the typical lead time for custom orders?

Custom orders typically take 20–30 days depending on complexity and size.

Do you provide repair and reconditioning services?

Yes, we offer comprehensive repair, re-sleeving, and reconditioning services to extend the life of your existing components.

Which industries do you serve?

We serve plastic processing, rubber manufacturing, petrochemical granulation, XPS foam production, and recycling industries globally.

Get in Touch

Visit Our Official Website

For the most accurate and up-to-date information, please visit the official Jinjia Screw website.

Visit Official Website

Company: ZHEJIANG JINJIA PLASTICS MACHINERY CO., LTD

Phone: +86 18205806278 (WhatsApp available)

Email: zsjinjia@163.com

Address: No. 8 Jixiang Road, Xihou Industrial Zone, Jintang Town, Dinghai District, Zhoushan, Zhejiang, China

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