Since 2002
Employees
Extruder Brands
Clients
Screws elements
A Global Leader in Twin Screw Extrusion Technology
As a leading global manufacturer, we specialize in the engineering and production of high-performance twin screw extruder parts. Committed to innovation and precision, we provide custom-developed spare parts that serve the diverse needs of customers worldwide.
Advanced Manufacturing, Superior Quality
We have optimized our production in our new 10,000m² smart factory, integrating cutting-edge manufacturing technologies such as cold forming screw shaft. This enables us to continuously enhance product quality and efficiency, ensuring every screw element and component meets the highest industry standards.
Efficiency That Drives Your Success
Our streamlined processes are designed with your productivity in mind. By maximizing efficiency, we significantly shorten lead times and deliver high-quality twin screw extruder parts directly from our factory to your floor.
Your Trusted Partner for Global Compatibility
We are dedicated to reducing your overall equipment operating costs without compromising on performance. Our parts are engineered for seamless compatibility with leading global extruder brands from Germany, Italy, Japan, China, India, and South Korea. Whether you are an equipment manufacturer or an end-user, we aim to be your most trusted partner in optimizing extrusion performance.
We deliver high-quality twin screw extruder parts that meet original equipment specifications, ensuring reliable performance and long service life.
We use premium, verified alloys and advanced heat treatment processes, sourced from trusted suppliers, for unmatched wear and corrosion resistance.
We engineer custom designs to meet specific polymer and processing challenges, enabling innovation in plastic modification and masterbatch production.
We are committed to responsive service and on-time delivery of high-quality parts, minimizing downtime for our international clients.
We move beyond parts to provide complete lifecycle support. From custom design and supply chain optimization to failure analysis and training, we ensure your extrusion line operates at its peak.
Beyond "producing from drawings," our engineers review and improve them.
For customers who only have physical parts, we provide measuring services to quickly create accurate CAD drawings and BOM lists, and complete the manufacturing.
We provide professional failure analysis for worn or broken screws and barrels, identifying the root cause through detailed inspection.
Special-Function Screw Element Development
High-Efficiency Mixing Elements: Sawtooth, Helical, and Z-Type screw element for precise mixing & gentle Shear
High-Efficiency Conveying Elements: Large-pitch and deep-groove screw elements for improved material transport
Self-Cleaning Elements: Optimized Design to Minimize Material Residue
Wear- and corrosion-resistant screws and shafts for harsh materials like filled, reinforced, or flame-retardant types.
A dedicated database for long-term customers, providing fast access to all their equipment's parts and drawings.
Fast-track service for urgent orders to minimize equipment downtime.
Key components for common machines kept in stock for customers, available on demand with periodic settlement.
Consultation and training on screw selection, combination optimization, and maintenance.
Achieved mass production of cold-forming shafts, enabling more stable operation for high-torque models across equipment manufacturers. Our global service team expanded to seven members, providing faster regionalized response worldwide.
Completed a technical transformation project with over $5 million investment, including the introduction of cold forming shaft machining equipment and ZEISS CMM inspection systems.
Provided extruder spare part solutions for the foaming industry.
Implemented Total Quality Management, further improving machining precision and product stability.
New 10,000 m² plant put into operation, with an annual capacity of 8,000 meters of screw elements, 2,000 shafts, and 2,000 barrels.
Fully upgraded brand visual identity (VI), reinforcing the brand philosophy: Focus. Serve Globally.
Upgraded production capabilities with 60+ sets of advanced machining equipment.
Annual output value exceeded $5.8 million, with overseas orders accounting for more than 50%.
Began delivering medium-to-large size screw elements and shafts, covering screw diameters from Ø130 mm to Ø200 mm.
Achieved manufacturing capability for 400+ screw element specifications, compatible with 30+ extruder brands worldwide.
Expanded global market presence to 30+ countries and regions across Europe, Asia, and the Americas.
Adopted 4-axis CNC machining and enhanced testing methods， including alloy spectrometer analysis and ultrasonic flaw detection.
Became a long-term cooperative supplier for global industry leaders such as RTP and PolyOne.
Achieved initial success in overseas market development, delivering twin screw extruder parts for German brand extruders (models 70mm, 92mm, etc.).
Successfully entered the supplier system of “Kingfa” and introduced German-imported CNC machining centers.
Nanjing factory commenced production, providing component reverse engineering and customization services.
Lesun officially embarked on its journey, focusing on the technology and manufacturing of twin-screw extruder spare parts, including screw elements, shafts, and barrels.
Precision involute spline ensuring high torque transmission with accurate centering and load distribution.
Best suited for:
High torque extrusion
Engineering plastics
Masterbatch production
Stretching elements, also called S-type elements, improve material exchange and distributive mixing in partially melted zones.
Best suited for:
Semi-plasticized material zones
Improved dispersion
Gentle mixing processes
Reverse kneading elements introduce backflow and pressure build-up, increasing residence time and enhancing mixing intensity.
Best suited for:
Before venting zones
Degassing preparation
High mixing demand sections
Neutral kneading elements provide strong mixing with minimal conveying effect, ensuring stable residence time and high mixing efficiency.
Best suited for:
High mixing zones
Sensitive formulations
Residence time control
Cold-Forming high-torque shaft with improved strength and fatigue resistance for demanding extrusion conditions.
Best suited for:
High torque extrusion systems
High filler compounding
Continuous high-load production
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