Introduction
NANJING LESUN SCREW CO., LTD. is a Chinese manufacturer of twin-screw extruder components, specializing in parallel co-rotating modular screw elements, barrels, and shafts for polymer processing equipment. The company is based in Nanjing, Jiangsu, and its business is centered on precision wear parts used in compounding, modification, and other extrusion applications, placing it in the industrial supply chain that supports plastics conversion rather than in primary polymer production.
Founded in the early 2000s, Lesun Screw has developed around the design and manufacture of standardized and custom extrusion spare parts across a broad size range, with product descriptions indicating diameters from roughly Ø18 mm to Ø400 mm depending on the source and product line. The company presents itself as a niche supplier with more than two decades of experience, technical capability in multiple powder-metallurgy alloy systems, and a customer base spanning domestic and export markets.
History and Development
Lesun Screw states that the company was founded in 2002, while other business records and profile pages indicate establishment in 2004 or registration in 2010, reflecting differences between operating history, public branding, and formal company registration data. The company’s own history page says it began in July 2004 and initially focused on supporting extrusion-machine manufacturers in Nanjing.
Over time, the business expanded from basic component supply to a broader portfolio of standard and non-standard screw elements, barrels, and shafts, with custom solutions for wear- and corrosion-intensive operating environments. Public product pages also indicate that the company invested in advanced CNC machines, specialized processing equipment, and more automated machining workflows as its manufacturing capability matured.
A further development milestone is the company’s internationalization. Trade and logistics records suggest export activity to multiple countries, while the firm’s product pages and marketplace listings present it as serving overseas customers as well as domestic extrusion equipment producers.
Business Operations and Segments
Lesun Screw operates in the field of extruder spare parts manufacturing, with a business model built around supplying components for co-rotating twin-screw extruders and related polymer-processing systems. Its public materials emphasize three core product families:
- Screw elements
- Barrels
- Shafts / cores
- Related extrusion spare parts and custom machined components
The company positions itself as a component supplier for extrusion-machine makers and polymer processors, rather than as an extruder OEM. Its business therefore sits upstream of finished plastics processing operations, where component quality directly affects machine uptime, wear life, throughput stability, and maintenance cycles.
The company also indicates the ability to provide both standardized parts and customized, application-specific designs, including support for overseas brands and domestic extrusion factories.
Products and Technologies
Lesun Screw’s core products are modular screw elements for parallel co-rotating twin-screw extruders, along with barrels and shafts sized for a range of machine platforms. The company’s manufacturing scope is described as covering screw elements and barrels from approximately Ø20 mm to Ø300 mm on some pages, and Φ18–400 mm on others.
Material and process capabilities
The company states that it works with multiple powder-metallurgy and alloy systems, including wear-resistant and corrosion-resistant materials. Public product information specifically mentions materials such as:
- W6Mo5Cr4V2
- 38CrMoAlA
- HSS-PM and other special steels
These materials are relevant because twin-screw extruder components operate under high torque, abrasion, shear, and in some cases chemical attack from filled or reinforced polymers, recycled plastics, or reactive compounds. In that context, material selection and surface durability are central to service life and processing consistency; Lesun explicitly markets its products around those performance requirements.
Manufacturing approach
Lesun’s public materials emphasize CNC machining, specialized processing equipment, and increasing levels of automation and intellectualization in machining operations. The company also highlights cooperation with international powder-alloy suppliers, suggesting a focus on metallurgy and process control as differentiators in component quality.
Compatibility and customer support
Product descriptions indicate that the company supplies parts compatible with a range of well-known extrusion-system brands, including Coperion, Leistritz, Berstorff, Toshiba, JSW, Kobe, APV, and Maris, among others. This suggests a business model oriented toward replacement parts, retrofit support, and machine compatibility, which is important in plants seeking to extend equipment life or reduce dependence on original OEM channels.
Applications and End Markets
Lesun Screw’s products serve the polymer processing and plastics compounding segment, especially applications using twin-screw extrusion technology. Public descriptions indicate use in:
- Polymer compounding and modification
- Wear-intensive extrusion operations
- Corrosive processing environments
- Replacement and maintenance of twin-screw extruders
Because twin-screw extruders are widely used for blending polymers with fillers, additives, colorants, and reinforcements, component durability has a direct effect on output quality and operating cost. Lesun’s marketing around “wear-resisting” and “corrode-resisting” solutions suggests it is targeting processors dealing with demanding formulations rather than only standard commodity plastics.
Global Presence and Market Position
Available public sources indicate that Lesun Screw has an export-oriented footprint. Shipment-tracking data report exports to 66 buyers across markets including India, Vietnam, and Turkey. The company’s own English-language pages and third-party listings also present it as an active supplier to overseas customers.
Its position in the market is best understood as a specialized niche manufacturer of extruder components rather than a broad plastics machinery conglomerate. In that niche, competition is shaped by part precision, materials engineering, lead time, compatibility with established extruder platforms, and the ability to deliver both standard and custom parts.
ChinaPlas’ exhibitor listing identifies the company as a “Shining Niche” enterprise and notes that it is a specialized and sophisticated SME recognized by the Chinese government, underscoring its profile as a technically focused small-to-medium industrial supplier.
Sustainability and Environmental Initiatives
Publicly available materials do not describe a formal sustainability program, emissions targets, or circular-economy reporting framework. The company’s environmental relevance is therefore indirect but important: by supplying durable wear parts for extrusion machinery, it can help processors extend service intervals, reduce unplanned downtime, and potentially lower material waste associated with premature component failure.
The same product categories also support processing of compounded materials, including recycled and filled formulations, where equipment wear can be especially severe. However, no source reviewed provides quantified evidence of the company’s environmental performance or life-cycle impact.
Financial Performance and Economic Impact
Lesun Screw does not publicly disclose detailed financial statements in the sources reviewed. Available records describe a comparatively modest industrial enterprise with limited staffing disclosures on LinkedIn and a relatively small registered capital in one business-data source. As a result, its economic impact is best assessed through its role in the plastics equipment supply chain rather than through published revenue or profit figures.
Its contribution lies in supporting downstream converters and extrusion-machine builders with parts that affect uptime, maintenance cost, and production continuity. In this sense, the company participates in the operational infrastructure of the plastics industry, particularly in Asia-based manufacturing networks and export markets.
Leadership and Corporate Governance
Publicly available business data identify Xu Libing as the legal representative and general manager in some third-party records. Company-profile pages also reference the same leadership name in English-language supplier listings.
Beyond that, the reviewed sources provide limited information on board structure, governance policies, or corporate ownership beyond a general private-company description in registry-style data. The company appears to function as a privately held manufacturer with management centered on technical and operational control.
Innovations and Future Outlook
Lesun Screw’s future prospects are closely tied to trends in high-performance extrusion, materials upgrading, and maintenance optimization. The company’s emphasis on multi-alloy processing, custom component design, and automated machining positions it to benefit from continued demand for longer-life screw elements and barrels in demanding compounding lines.
Key opportunities appear to include:
- Higher-specification parts for abrasive and corrosive formulations
- Replacement demand from a large installed base of twin-screw extruders
- Export growth in emerging plastics-processing markets
- Customization for non-standard machine geometries and retrofit applications
The main challenges are typical of specialized component manufacturing: maintaining dimensional precision, sustaining material quality, competing on price with other Asian suppliers, and adapting to tighter expectations for traceability, durability, and process efficiency. The company’s niche positioning suggests that technical credibility and delivery reliability will remain central to its competitiveness.
Summary
NANJING LESUN SCREW CO., LTD. is a specialized Chinese manufacturer of twin-screw extruder wear parts, with a business centered on screw elements, barrels, and shafts for polymer processing equipment. Its role in the plastics industry is that of a technical component supplier whose products help determine extrusion performance, maintenance intervals, and process stability in compounding and modification applications.
References
- •
CPS+ eMarketplace. (n.d.). NANJING LESUN SCREW CO., LTD.NANJING LESUN SCREW CO., LTD.. CPS+ eMarketplace. https://www.chinaplasonline.com/eMarketplace/ExhibitorInfo?CompId=1020125Link