Import Bimetallic Screw Barrel — Buy in Bulk from Supplier in China

Zhoushan Dinghai Jinmao Plastifying Machinery Manufacturing Factory produces bimetallic screw barrels using a base material of 38CrMoAlA (JIS SACM645) or 42CrMo alloy steel, combined with an outer layer of Fe-based alloy powder reinforced with nickel-based additives. This construction delivers high wear resistance and thermal stability, critical for extrusion processes in plastic manufacturing. The bimetallic design extends service life by resisting corrosion and abrasion from processed polymers.

The screw barrel’s outer layer is typically applied via plasma or thermal spray coating, achieving a hardness of 58 - 62 HRC for the alloy surface. Standard industry specifications for such components include surface roughness of Ra 0.4 - 0.8 micrometers and diameter tolerances of ±0.02 mm to ensure precise fitment in extrusion machinery. The barrels are available in lengths and diameters tailored to specific equipment, with typical sizes ranging from 20 mm to 150 mm in diameter and 200 mm to 2,000 mm in length.

These screw barrels are used in industries such as automotive, aerospace, and packaging, where consistent extrusion quality is essential for producing plastic profiles, pipes, or films. The supplier’s location in Zhoushan, Zhejiang, provides access to coastal shipping routes for efficient export. Buyers should confirm compatibility with their extrusion machines, as barrel dimensions and alloy specifications must align with the equipment’s design parameters.

Zhoushan Dinghai Jinmao Plastifying Machinery Manufacturing Factory is based in Ligang No.2 Industrial Area, Zhoushan, Zhejiang Province, China. The company specializes in manufacturing plastifying machinery components, with a focus on bimetallic screw barrels and related parts for the plastics industry. Its location in a coastal industrial zone facilitates access to raw materials and export logistics via nearby ports.

As an imported-tier supplier, the factory emphasizes precision engineering for extrusion applications. The listing highlights its capability to produce bimetallic screw barrels with customized dimensions and alloy compositions. While the profile does not provide response metrics, the supplier’s specialization in plastifying machinery suggests a narrow focus on high-performance components for plastic processing.