Import Bimetallic Screw Barrel — Buy in wholesale FOB from Supplier in China

The Bimetallic Screw Barrel is a precision-engineered component designed for extrusion and injection molding machines, featuring a bimetallic construction that combines an inner wear-resistant layer with an outer corrosion-protected surface. This dual-layer design extends the barrel’s operational life under high-temperature and high-pressure conditions, reducing downtime for maintenance. The part is manufactured to exact tolerances for compatibility with a broad range of industrial machinery used in plastics processing, automotive parts production, and packaging lines.

The inner lining typically uses a high-alloy steel or nitrided steel to resist abrasion from molten polymers, while the outer shell is often a carbon or low-alloy steel for structural strength. Typical industry standards for such barrels include hardness values of 58-62 HRC for the inner surface and a surface roughness of Ra 0.4-0.8 micrometers to ensure smooth material flow. These barrels are available in standard diameters from 20mm to 200mm, with lengths tailored to the specific machine model, and are often supplied with a polished or chrome-plated finish to further enhance wear resistance.

Primary buyers include plastics manufacturers, automotive component suppliers, and packaging producers who require consistent output quality and minimal production interruptions. The barrels are suited for processing thermoplastics like PP, PE, and PVC, as well as engineering resins such as ABS and nylon. Sourcing terms for this supplier in Zhoushan, Zhejiang, should confirm compatibility with existing machinery, as the barrel’s diameter, length, and screw geometry must match the machine’s specifications. Bulk orders are typically shipped via sea freight, with lead times dependent on production scheduling and customization requirements.

Zhoushan Qunying Plastic Machinery Manufactory is based in Jintang Town, Zhoushan City, Zhejiang Province, China. The company specializes in the production of plastic machinery components, including screw barrels, screws, and other extrusion parts, catering to industrial manufacturers in the plastics sector. Its location in Zhoushan, a coastal city with a major port, facilitates efficient logistics for bulk exports, particularly for international buyers sourcing machinery parts from China.

The supplier operates from No. 169, Xindao East Road, Jintang Town, and holds a harbor trust tier, indicating a verified business presence in a key manufacturing hub. While the response rate and average response hours are currently unavailable, the company’s focus on plastic machinery components suggests a niche expertise in this segment. Buyers should confirm production capabilities, lead times, and quality control processes directly with the supplier, as these details are not explicitly stated in the available profile.