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changjiascrew.com
Changjia Plastic Machinery Factory

High-Performance
Screw Barrels, Tailored to Your Needs

Zhoushan Changjia Plastic Machinery Co., Ltd. – Your trusted partner in precision-engineered screw barrels, twin-screw systems, injection molding components, and auxiliary plastic processing equipment.

Changjia Production Environment

About Zhoushan Changjia Plastic Machinery

We are an enterprise dedicated to high-precision screw processing and international trade, committed to providing customers with high-quality and innovative solutions. With advanced processing technology and a strict quality control system, we ensure that every product meets the highest standards of precision and durability.

Our team continuously innovates to meet the diverse needs of global customers. Through an efficient international trade network, we promote high-quality products and services to markets worldwide, earning the trust of clients across industries.

  • Direct manufacturer with full production control
  • Customized solutions for specialized applications
  • Global export experience in over 50 countries
  • ISO-compliant quality assurance processes
View Our Product Range

Our Product Range

Discover our comprehensive lineup of high-performance components for plastic extrusion, injection molding, and recycling systems.

Extruder Screw Barrel

Extruder Screw Barrel

High-precision screw and barrel sets designed for optimal melt homogeneity and long service life in single-screw extrusion systems.

  • • Chrome-plated or bimetallic options
  • • Custom L/D ratios available
  • • Suitable for PVC, PP, PE, and recycled materials
Learn More
Twin Screw Systems

Twin Screw Systems

Advanced co-rotating and counter-rotating twin-screw configurations for compounding, devolatilization, and high-output extrusion.

  • • Conical and Parallel designs
  • • Modular screw elements
  • • High torque transmission
Learn More
Injection Molding Screw

Injection Molding Screw

Precision-engineered screws for injection molding machines, ensuring consistent plasticization and energy efficiency.

  • • Titanium-plated options
  • • Wear-resistant materials
  • • Compatible with Haitian, Arburg, Nissei
Learn More
Ceramic Heating Ring

Ceramic Heating Ring

High-efficiency heating elements with precise temperature control for extrusion and injection molding applications.

  • • Fast heat-up time
  • • Energy-saving design
  • • Durable ceramic insulation
Learn More
Gearbox

Single-Screw Extruder Gearbox

Robust gearboxes designed for high-torque transmission and smooth operation in extrusion lines.

  • • Hardened gears
  • • Oil-lubricated systems
  • • Custom reduction ratios
Learn More
Granulator

Edge Material Granulator

Efficient recycling granulators for reprocessing edge trim and scrap materials in film and sheet production.

  • • High-capacity cutting chamber
  • • Low noise operation
  • • Easy maintenance design
Learn More
PVC Screw

PVC Special Screw

Optimized screw design for processing rigid and flexible PVC with minimal degradation and excellent mixing.

  • • Low shear configuration
  • • Corrosion-resistant materials
  • • Uniform temperature profile
Learn More
Blown Film

ABA Three-Layer Blown Film Machine

Complete film blowing lines for producing multi-layer packaging films with precise layer control.

  • • High output capacity
  • • Automatic gauge control
  • • Energy-efficient motors
Learn More

Why Choose Changjia?

We combine advanced manufacturing, rigorous quality control, and customer-focused innovation to deliver superior plastic processing solutions.

1

Precision Engineering

CNC-machined components with tight tolerances ensure optimal performance and longevity in demanding applications.

2

Custom Solutions

We design and manufacture tailored screw configurations and components to meet your specific material and process requirements.

3

Global Support

With international distribution and technical support, we serve customers in over 50 countries with responsive service.

4

Quality Assurance

Every product undergoes rigorous testing and inspection to ensure compliance with international standards.

15+
Years in Industry
50+
Countries Served
1000+
Custom Projects
98%
Customer Retention

Frequently Asked Questions

Find answers to common questions about our products, services, and manufacturing capabilities.

Are you a direct manufacturer or a trading company?

We are a direct manufacturer. Zhoushan Changjia Plastic Machinery Co., Ltd. operates our own production facilities with full control over design, processing, and quality assurance.

Can you make customized products?

Yes, we specialize in customized solutions. Our engineering team works with clients to design screw configurations, barrel linings, and components tailored to specific materials, output requirements, and machine compatibility.

What are the main application areas of your products?

Our products serve a wide range of industries including packaging (film, sheet), pipe and profile extrusion, recycling, compounding, medical plastics, and consumer goods manufacturing.

What products can you offer?

We offer extruder screw barrels (single and twin-screw), injection molding screws, gearboxes, heating rings, granulators, blown film dies, and complete production lines for PVC, ABA film, and recycling applications.

Solution to the generation of spots in the production of flexible PVC using chrome plated screws?

Spot formation can be minimized by optimizing screw design to reduce shear heat, ensuring proper temperature control, using high-purity raw materials, and maintaining clean processing conditions. We offer specialized low-shear PVC screws to address this issue.

Get in Touch

Have questions about our products or need a custom solution? Contact our team today.

Email

screw@zschangjia.com

Phone

+86 15957056012

+86 0580-8252221

Address

24-18 Dafeng Road, Xihou Industrial Park, Jintang Town, Dinghai District, Zhoushan City, Zhejiang Province, China

Visit Official Website to Contact

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