Zhejiang Huaye Plastics Machinery Co. Ltd is one of the largest professional production centers of the precise screws and barrels, conical ¶llel twin screws and barrels and other spare parts.

We adopt advanced technical equipments and assembly lines, which produce bimetallic barrels (including HK1 Fe-based NiCrCO alloy, wear resistant, HK3 Ni-based alloy, wear resistant enriched; HK5 Ni-based alloy, wear & corrosion resistant; and HK7 Co-based alloy, suitable for high speed, high pressure and high temperature (under 600℃), wear & corrosion resistant)，and special material screws (material : HPT1, HPT2, HPT3).
HPT1: it’s wear-resistant, suitable for 15% glass fiber, bakelite, electric plastic machinery etc.

HPT2: It’s suitable for Bakelite, PC+glass fiber, nylon+glass fiber.
HPT3: It features non-coherent, wear resistant & corrosion resistant, suitable for magnetic powder, porcelain powder, aluminum and magnesium powder, iron powder.
HPT5: It features coherent, wear resistant & corrosion resistant. The above four materials, which named Through Hardened Screw and could replace common bimetallic material are used widely abroad.

★Stainless-steel screw—Suitable for : PC, PVC, acrylics and transparent material.
★Base materials of PTA Bimetallic Screw :1. 42CrMo 2. 38CrMoALA 3. SKD61
★PTA Nitration screw is especially for bakelite.

We use the materials according to customers’ requires.