Product Category

Product Category

Trusted By Global industry Leaders

Our Premium Collection

Precision-Engineered Excellence

Each screw is meticulously crafted using advanced CNC technology and undergoes rigorous quality control to ensure unparalleled precision.

CUSTOM AVAILABLE
Parallel Twin Screw

Parallel Twin Screw

Parallel twin screws enable
high-performance mixing
and extrusion in plastics.

  • Material: Bimetallic Nitrided Steel
  • Tolerances: ±0.01mm
CUSTOM AVAILABLE
Rubber & Plastic Twin Screw

Single Screw

Single screw provides simple,
continuous melting and
conveying for plastics.

  • Material: Bimetallic Nitrided Premium Steel
  • Tolerance:±0.001mm
CUSTOM AVAILABLE
PS Foaming Twin Screw

Conical Twin Screw Barrel

Conical twin screw barrel
provides high mixing
efficiency and torque.

  • Material: High-Speed Tool Steel
  • Tolerance:±0.0005mm
CUSTOM AVAILABLE
PVC Pipe Screw Barrel

Injection Molding Screw

Injection screw melts plastic
and injects into the
mold precisely.

  • Material:Nitrided SteeI + Bimetallic
  • Tolerance: ±0.001mm

Our Products

Apply Various Plastics In Production

Our barrel and screw components enhance efficiency for your production

Product Application

GRANULATION

Product Application

WOOD-PLASTIC COMPOSITE

Product Application

PVC PRODUCTS

Product Application

PLASTIC PIPE

Product Application

FILM BLOWING

Product Application

INJECTION MOLDED PRODUCTS

Your Industry Not Listed?

We serve the entire plastic production industry. Contact our engineering team to discuss your specific application requirements and discover how our precision screws can elevate your manufacturing processes.

Discuss Your Application
Get in Touch

Ready to Start Your Premium Project?

Get a customized quote within 12 Hours. Our dedicated engineering team is ready to assist with your requirements.

* Your information is secure and will never be shared with third parties.

Contact Information

Call Us

+86-13505809642

Visit Us

Block C,No.2 West Section,Xingzhou Avenue,Dinghai District ,Zhoushan City,Zhejiang Province

Premium Response Time

12 Hours

Guaranteed response time for all premium inquiries

About Us
About Us

About Us

Zhoushan Nanhaiya Plastic Machinery Co., Ltd.
ABOUT OUR COMPANY

Global Premium Screw Solutions

Built on Excellence

Zhoushan Nanhaiya Plastic Machinery Co., Ltd., one of the earliest professional manufacturers in China to delve into the precision screw and barrel market, has been dedicated to the R&D and manufacturing of this niche market since its establishment.

Leveraging its extensive technical expertise, advanced production processes, and intelligent equipment, the company has integrated over a decade of experience in screw and barrel manufacturing and actively introduced cutting-edge European and American technologies and techniques. This has enabled the company to establish a comprehensive system from core technology R&D to full-line product production. This encompasses custom screw design, alloy spray welding, and full-scale product manufacturing, including single screws, conical twin screws, and parallel twin screws. The company also offers specialized screw and barrel solutions for specialized applications such as PE wood-plastic composites,WPC, PVC, EVA, TPR, TR, and aluminum-plastic composite panels.

500+

Premium Global Clients

12H

Response Time Guarantee

Featured Products

Featured Products

Recommended Products

Contact Information

Address

Block C,No.2 West Section,Xingzhou Avenue,Dinghai District ,Zhoushan City,Zhejiang Province

News

News

Latest From The Blog
The working process and operation precautions of the twin-screw foam granulator

The working process and operation precautions of the twin-screw foam granulator

  • The materials pass through the feeding port of the twin-screw foam granulator. Under the action of the rotating screws, they are rolled into balls and move forward along the screw grooves. Due to the shearing, compression and stirring effects of the screws, the materials are further mixed and plasticized, with the temperature and pressure gradually increasing, presenting a viscous flow state. They then pass through the die head at a certain pressure and temperature, and finally the products of the required shape are obtained.
Zhoushan Nanhaiya brought high wear-resistant barrels and screws to the Shenzhen and Tashkent Rubber and Plastics Exhibitions.

Zhoushan Nanhaiya brought high wear-resistant barrels and screws to the Shenzhen and Tashkent Rubber and Plastics Exhibitions.

  • On April 15th, CHINAPLAS 2025, the highly anticipated international rubber and plastics exhibition, opened with great fanfare at the Shenzhen International Convention and Exhibition Center (Bao'an). Zhoushan Nanhai Asia Plastic Machinery Co., Ltd. showcased its full range of highly wear-resistant core products and customized solutions at the show. Across an exhibition area of over 380,000 square meters, the company showcased the precision strength of "Made in China" to professional visitors from 150 countries and regions.
Why do black lines appear repeatedly in the extruder? This article teaches you how to quickly determine whether it is caused by a problem with the barrel or screw.

Why do black lines appear repeatedly in the extruder? This article teaches you how to quickly determine whether it is caused by a problem with the barrel or screw.

  • Melt filters that have not been replaced for a long time can become clogged, leading to poor material flow and localized overheating and carbonization. Damaged filters can allow impurities to enter the mold directly. It is recommended to check in the order of "raw materials → equipment cleaning → accessories inspection". First replace a batch of new raw materials for testing. After eliminating the raw material problem, disassemble and clean the barrel, screw and mold, and finally check the status of accessories such as the screw and filter.
Focus on the 18th China Wood Plastics Summit Forum: Zhoushan Nanhaiya appeared at the conference as one of China's largest suppliers of conical twin-screw barrels for WPC.

Focus on the 18th China Wood Plastics Summit Forum: Zhoushan Nanhaiya appeared at the conference as one of China's largest suppliers of conical twin-screw barrels for WPC.

  • Nanhaiya's barrels utilize a multi-stage heating and cooling system with strategically divided heating zones (e.g., feeding, compression, and homogenization). This allows precise temperature control of each section based on the plasticization requirements of the WPC raw material, preventing localized overheating or overheating.
X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy
Reject Accept