From Zhoushan — a well-known screw and barrel manufacturing hub in China — Zhoushan Nanhaiya Plastic Machinery Co., Ltd. provides screw and barrel solutions for plastic processing customers in international markets.
Founded in 2014, Zhoushan Nanhaiya Plastic Machinery Co., Ltd. emerged from Zhoushan's rich industrial heritage — a region renowned as China's premier hub for screw and barrel manufacturing. Our founders combined decades of engineering expertise with a clear vision: to provide international-quality precision components at competitive factory-direct pricing.
Today, we support plastic processing customers in international markets, including Europe, the Americas, the Middle East, and Southeast Asia. Our team provides technical support and quotations, with warranty terms confirmed by product type, application, and order agreement.
Every screw and barrel we produce can be inspected according to order requirements, with dimensional verification and metallurgical testing available. This dedication to quality has made us a partner for OEMs and processors who require consistent, high-performance components.
From our founding in Zhoushan to becoming a trusted global supplier, every milestone reflects our commitment to precision and partnership.
Established in Zhoushan — a well-known screw and barrel manufacturing hub in China — with a focus on precision screw and barrel manufacturing for the plastic machinery industry.
Expanded CNC machining and production capabilities to support manufacturing consistency, process control and quality inspection.
Expanded our customer support to international markets across Europe, the Americas, Middle East, and Southeast Asia.
Continued to improve our quality inspection and manufacturing processes for screw and barrel product lines, supporting the requirements of customers in export markets.
Strengthened cooperation with plastics machinery OEMs and processors across international markets.
Continuing to improve manufacturing capacity, production organisation and quality-control processes to support future customer requirements.
Our facility combines CNC machining, heat treatment and inspection processes to produce custom screw and barrel components for plastic processing machinery.
CNC lathes and milling centers with precision machining and dimensional inspection for consistent, repeatable quality.
For components requiring complex five-axis machining, production is coordinated through qualified manufacturing partners under Nanhaiya's drawing review, process control and final inspection requirements.
Gas nitriding treatment helps improve the surface hardness, wear resistance and service life of screw and barrel components for different processing applications.
Bimetallic alloy liners are produced through centrifugal casting to improve barrel resistance to abrasion and corrosion in demanding plastic processing applications.
Advanced tungsten carbide and nickel-based alloy welding for screw flight repair and reinforcement against abrasive materials.
Dimensional inspection, hardness testing and material-related checks can be arranged according to product type and order requirements.
Our industry association memberships and cooperation with partners in international markets support technical exchange and long-term business relationships.
Updates from exhibitions, industry events and Nanhaiya's manufacturing development.
Nanhaiya showcased the latest planetary screw series and alloy spray welding technology at CHINAPLAS 2026, introducing screw barrel and alloy spray welding capabilities to international visitors.
A detailed comparison of bimetallic centrifugal casting and nitriding surface treatments for extruder screw barrels, including material selection, surface treatment differences and application considerations.
Our precision components serve plastics processors and machinery manufacturers across international markets, with support tailored to each region.
Supporting plastics processors and OEMs across Germany, Italy, Turkey, the UK, and the United States with precision screw and barrel components.
Cooperation with processors in Saudi Arabia, UAE, Iran, and Egypt, supporting the region's growing plastics and petrochemicals industry.
Rapid growth across Vietnam, Indonesia, Thailand, and the Philippines, meeting the demand of the region's expanding manufacturing sector.
Whether you need custom screw design, durable barrel solutions, or reliable spare parts, our team is ready to support your requirements. We can review your machine information and processed material to provide pricing and technical support.
