Import Cylinder — Buy in Bulk from Supplier in China

This cylinder is a specialized barrel component designed for plastic extrusion and compounding systems, compatible with a broad range of engineering plastics and composite materials. The supplier offers multiple design variants, including gradual, barrier, and shunt types, to optimize material flow and mixing during processing. Each design is tailored to specific polymer behaviors, such as shear sensitivity or thermal stability.

The barrels are precision-machined from alloy steels, often nitrided or bimetallic-lined to resist wear from abrasive fillers like glass fiber, ceramic powder, or metal powders. Typical internal diameters range from 20 mm to 200 mm, with length-to-diameter ratios customized for the extrusion process. Surface treatments are applied to achieve a hardness of 60 HRC or higher, ensuring longevity in high-throughput production.

These cylinders are primarily used by plastic processing plants and compounders producing PA, PP, PC, and specialty composites like WPC pellets. Buyers should specify the polymer type, filler content, and desired output rate to select the appropriate barrel design. Standard packaging uses wooden boxes for safe export, with incoterms and lead times negotiated per order.

Zhoushan Ruihong Screw Manufacturing Co., Ltd. is located at No. 13, Wanrong Road, Jintang Town, Zhoushan, Zhejiang Province, China, with the postal code 316034. The company specializes in manufacturing high-precision barrels and screws for plastic extrusion and compounding, catering to a diverse range of engineering plastics and composite materials. Its product line includes advanced designs to handle challenging materials like magnetic powder and ceramic-filled polymers.

The supplier holds a harbor trust tier and an imported supplier tier, indicating a verified and internationally engaged operation. While the response rate and average response hours are currently unrecorded, the company’s focus on custom design solutions for plastic processing sets it apart. Buyers are encouraged to discuss material compatibility and barrel specifications directly with the supplier to ensure optimal performance.