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

Product Introduction
Our high-performance extruder barrels are paired with precision-machined screws, which are made of premium 38CrMoALA or 1.8550 forged materials. The screws undergo quenching and tempering to reach a hardness of HV290–320, followed by plasma surfacing of nickel-based alloy on the surface to ensure an alloy layer thickness of ≥1.7 mm and hardness of ≥HRC58. After precision machining, the entire screw is treated with integral nitriding, achieving a nitriding depth of 0.5–0.7 mm, surface hardness of HV860–980, and a metallographic structure grade of ≥Level 2.
Our Advantages
1. Durable Material & Advanced Treatment
The combination of high-grade forged materials and multi-step heat treatment processes ensures the extruder barrel and matching screw have outstanding wear resistance and structural stability, significantly prolonging the service life of the whole equipment.
2. Cost-Effective Dual Options
We offer two barrel configurations, including a replaceable inner alloy liner option that allows the barrel shell to be reused, effectively reducing long-term operation and maintenance costs.
3. Strong Adaptability
The barrel-screw system is specially optimized for high-demand extrusion scenarios, with excellent corrosion resistance and high-temperature stability to cope with harsh processing conditions.


Application
- Suitable for the extrusion of PVC pipes, profiles, sheets and foam products
- Ideal for CPVC pipe extrusion processes
Technical Specifications
Barrel Option A
- Material: Premium 38CrMoALA forged steel
- Heat Treatment: Quenched and tempered to HB290–320; Integral nitriding processed in NITREX nitriding furnace
- Key Parameters: Nitriding depth of 0.5–0.7 mm, surface hardness of HV860–980, metallographic structure grade ≥Level 2
Barrel Option B
- Material: 42CrMo steel for barrel shell; German HPT1 powder alloy liner for inner part
- Heat Treatment: Quenched and tempered to HB290–320
- Key Parameters: Alloy liner thickness >7 mm, hardness of HRC58–62; The barrel shell can be reused, and the inner alloy liner is replaceable after wear
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