Precision Screws & Barrels for Industrial Excellence

Over 25 years of expertise in manufacturing high-performance injection and extrusion components for plastics, rubber, food, medical, and non-woven industries. Trusted by global partners across 60+ countries.

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25+

Years of Experience

5

Advanced Factories

60+

Global Markets

About Jinyi Precision

With over 25 years of development, Ningbo Jinyi Precision Machinery Co., Ltd. is one of the largest specialized manufacturers of screws, barrels, and related accessories in China. Based in Ningbo and Zhoushan, we operate five state-of-the-art factories, including our dedicated facility Ningbo Lichao Tiebar Precision Machinery Co., Ltd., which focuses on tie bars, piston rods, and nuts.

We are committed to delivering precision-engineered components for the plastics, rubber, food processing, medical, and recycling industries. Our continuous investment in R&D, advanced CNC machining, and strict quality control ensures every product meets international standards.

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Our Product Range

High-performance, durable, and customizable screw and barrel solutions engineered for maximum efficiency, wear resistance, and longevity across diverse industrial applications.

Nitrided Screw

High surface hardness and excellent wear resistance. Ideal for general-purpose plastic injection molding with enhanced fatigue strength.

Bimetallic Barrel

Double-layer construction with wear-resistant inner lining. Perfect for corrosive and abrasive materials like PVC and recycled plastics.

Parallel Twin Screw Barrel

Optimized for high-output extrusion of PVC, PE, and PP pipes. Ensures uniform melting and excellent mixing performance.

PVD Coated Screw

Advanced Physical Vapor Deposition coating for extreme wear and corrosion resistance. Ideal for engineering plastics and optical-grade materials.

High Injection Speed Screw

Specially designed for fast-cycle injection molding of optical lenses, medical devices, and thin-wall packaging.

Food Processing Screw Barrel

Hygienic design with FDA-compliant materials. Used in extrusion of snacks, pet food, and biodegradable packaging.

Melt Blown Screw Barrel

Engineered for high-precision melt blowing in non-woven fabric production, including medical masks and filtration materials.

Tie Bar & Accessories

High-tensile strength tie bars, nuts, and piston rods manufactured for durability and precise alignment in injection molding machines.

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Why Choose Jinyi Machinery?

We combine decades of engineering expertise with cutting-edge technology to deliver unmatched performance and reliability.

Quality Certified

ISO 9001 certified with rigorous in-house testing and material traceability for every component.

High Efficiency

Optimized designs for faster melting, better mixing, and reduced energy consumption.

Custom Solutions

Tailored screw and barrel configurations to meet specific material and process requirements.

Global Support

Dedicated technical team and sales network across Asia, Europe, and the Americas.

Industry Applications

Our components are trusted in critical applications across multiple high-demand sectors.

Plastic Processing

Injection molding, blow molding, sheet extrusion for packaging, automotive, and consumer goods.

Rubber & Silicone

Liquid silicone rubber (LSR) injection and extrusion for medical, automotive, and electronics.

Food Extrusion

Snacks, pet food, and biodegradable containers with hygienic, FDA-compliant components.

Non-Woven Fabric

Melt-blown technology for medical masks, filters, and hygiene products.

Frequently Asked Questions

What materials are your screws and barrels made from?

We use high-grade alloy steels such as 38CrMoAlA, 42CrMo, and SKD61, treated with nitriding, chrome plating, or bimetallic lining for enhanced durability.

Can you customize screw designs?

Yes, we offer full customization based on your material type, output requirements, and machine specifications.

What is the lead time for production?

Typical lead time is 25–35 days depending on complexity and order volume. Urgent orders can be expedited.

Do you provide technical support?

Yes, our engineering team offers installation guidance, troubleshooting, and performance optimization support.

Get in Touch

Reach out to our team for quotes, technical inquiries, or partnership opportunities.

Contact Information

Tel: +86-574-55002386

Mobile/WhatsApp: +86 18868642352

Email: info@jinyiscrew.com

Address: 158 Qiancheng Road, Zhenhai District, Ningbo, Zhejiang, China

Representative: Ms. Melody

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