Twin Screw Barrel
Zhejiang Zhongyang Screw Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of twin screw barrel in China. With abundant experience, we warmly welcome you to buy durable twin screw barrel from our factory. All customized products are with high quality and competitive price.

Product Introduction
ZY Screw manufactures high-performance twin screw barrels with both nitrided and bimetallic structures to meet different requirements for wear resistance and service life.
Advanced screw geometry effectively reduces shear force, ensuring a gentler, more stable, and more uniform plasticizing process. This design is especially suitable for PVC pipe and profile extrusion, delivering consistent product quality and long-term operational reliability.
Our Advantages
Complete supply of conical twin screws and barrels with customized configurations
Professional material selection and surface treatment recommendations based on processing conditions
Screws manufactured strictly according to OEM specifications, ensuring perfect interchangeability
Capable of producing all commonly used screw profiles and special designs for specific customer needs
Advanced CNC machinery and CAD/CAM systems for manufacturing complex products with tight tolerances and high surface finish, providing excellent resistance to wear and corrosion


Application
Widely used in:
PVC pipe extrusion lines
PVC profile extrusion lines
Other rigid PVC processing applications requiring stable plasticization and long service life
Technical Specifications
|
Item |
Description |
|
Base Material |
High-quality 38CrMoAlA |
|
Heat Treatment |
Nitriding / Bimetallic |
|
Hardness after Quenching & Tempering |
HB 280 – 320 |
|
Nitrided Layer Hardness |
HV 980 – 1050 |
|
Nitrided Case Depth |
0.5 – 0.8 mm |
|
Nitrided Brittleness Grade |
≤ 2 |
|
Surface Roughness |
Ra 0.4 |
|
Screw Straightness |
0.015 mm |
|
Alloy Layer Hardness |
HRC 60 – 65 |
|
Alloy Layer Depth |
1.0 – 2.0 mm |
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