Recently, Nanjing Lesun Screw Co., Ltd. (hereinafter referred to as "Lesun Screw") successfully delivered a batch of barrels for Ø133 mm twin-screw extruders to a petrochemical customer in Zhejiang Province. Against the backdrop of industry-wide discussions centered on "larger sizes," this delivery vividly demonstrates Lesun Screw's core philosophy: for customers, ultimate operational stability, precise delivery assurance, and outstanding overall cost performance represent far greater value than the pursuit of size records alone. This successful delivery not only highlights Lesun Screw's strong technical capabilities and reliable delivery performance in the manufacturing of medium-to-large extruder components, but also marks a solid step forward in the journey toward domestic substitution and OEM-grade replacement of high-end components.
We firmly believe that competition in the twin-screw component sector is not merely a race for larger dimensions. A production system capable of long-term, stable, and efficient operation is the result of meticulous optimization across every core component—precision, materials, processes, and reliability.
The Ø133 barrel delivered in this project represents a mainstream model widely used in applications such as PC compounding and film production, where performance directly impacts production continuity and product quality. Leveraging deep expertise in materials science, heat-treatment processes, and deep-hole machining, Lesun Screw ensures that these barrels deliver exceptional wear resistance, corrosion resistance, and extended service life. We believe that refining proven, mainstream models to the highest standard—thereby safeguarding production continuity and operational safety—constitutes another form of high-value technological advancement.
In an era where supply chain stability faces unprecedented challenges, a committed delivery date serves as a critical assurance for customers' production planning. Through scientifically managed supply chains, Lesun Screw provides component solutions that combine reliable performance, on-time delivery, and rapid service response.
As a mid-sized model in the twin-screw extruder category, the Ø133 mm configuration imposes stringent requirements on material selection, heat-treatment processes, machining accuracy, and overall stability. From the selection of special alloy steels and advanced wear- and corrosion-resistant inner bore treatments, to final precision machining and inspection, every step of this delivery was rigorously controlled by Lesun Screw's technical team. The result is barrels with high straightness, excellent concentricity, and superior surface finish, with key performance indicators meeting or exceeding industry standards and fully supporting long-term stable operation under high-temperature, high-pressure, and high-torque conditions.
In today's market environment, ensuring a stable, efficient, and cost-effective supply chain for critical components has become a shared priority for both equipment users and manufacturers. Lesun Screw deeply understands the importance of industrial chain collaboration. Our OEM-grade replacement solutions are designed to offer end users an additional option that is reliable, efficient, and economically competitive.
Guided by the philosophy of "serving end users and supporting equipment manufacturers," our goal is not simple replacement, but rather to deliver components with equivalent performance, faster delivery, and more flexible service through focused technical specialization. We strive to become a professional and dependable complement within equipment manufacturers' service networks.
When end users face urgent spare-part requirements, Lesun Screw's solutions help shorten lead times and maintain production continuity—closely aligned with equipment manufacturers' ultimate objective of ensuring stable customer operations. Through professional collaboration, we aim to create greater value for end users, reduce total operating costs, shorten maintenance cycles, and jointly enhance customer satisfaction and market competitiveness.
Nanjing Lesun Screw Co., Ltd. has long specialized in the R&D and manufacturing of core components for twin-screw extruders, including screw elements, barrels, and mandrels. The company operates a comprehensive technical development system and rigorous quality control processes, serving demanding applications such as polymer modification, coal chemical processing, and powder granulation.
Recently introduced cold roll–formed mandrel processing technology has now entered batch production, enabling Lesun Screw to offer a wide range of mandrel solutions tailored to different machine sizes and torque ratings.
The successful completion of this project represents another authoritative market validation of Lesun Screw's technical strength and product quality. Looking ahead, Lesun Screw will continue to increase R&D investment, advance technological breakthroughs in large-scale and specialized component applications, and strive to become the most professional and reliable strategic partner for extrusion equipment users and manufacturers—both in China and worldwide.
