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**Specification:** Screw diameter: 15mm–300mm Maximal length: 8000mm Barrel inner diameter: 15–300mm Maximal length: 4000mm Different bimetallic alloys are available to suit various raw materials. **Base Materials:** (1) 38CrMoAlA (JIS SACM645) (2) 42CrMo (AISI 4140) (3) 9Cr18MOV **Bimetallic Alloy Materials:** 1) Fe-based alloy 2) Ni-based alloy / Deloro alloy 3) Co-based alloy 4) NiCo-based alloy 5) Tungsten carbide / Wolfram carbide **Technics:** Heat treatment, high-frequency quenching, nitriding treatment, hard-chrome electroplating, bimetallic welding, and centrifugal casting. **Technical Parameters:** Nitrided layer depth: 0.5–0.8mm Nitrided hardness: 900–1000HV Nitrided brittleness: Less than grade 1 Surface roughness: Ra0.4 Screw linearity: 0.015mm Hard-chrome plating hardness after nitriding: ≥ 950HV Chrome-plating layer depth: 0.025–0.085mm Bimetallic layer depth: 3mm **Warranty & Service:** 1 year We focus on quality and service. As an experienced manufacturer, we are your best choice. **Our Company:**

**Products Application:** 1) General plastics, PVC 2) Material compounds like CACO3, glass fiber, recycled materials, stabilizers 3) ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU, etc. 4) Scrap and waste plastic, PVC recycling 5) Modified engineering plastics **Terms and Conditions:** **Means of transport:** Ocean, Air, Express **Production time:** About 20–30 days after receiving the advance payment **Production Process:** Receiving orders – Designing & Drawing confirmation – Blanking Thermal refining – Heat treatment – Rough Turning – Polishing – Drilling for barrel – Semi Finishing Machining – Bimetallic welding – Centrifugal casting for barrel – Polishing – Nitriding treatment (120 hours) or High frequency quenching – Hard-chrome plating – O.D. Grinding – Honing for barrel – Alignment – Polishing – Inspecting – Packing & Shipping **ZY SCREW's Advantages:** - First-class designing and research team - High-quality and durable screw and barrel products - Professional sales team for timely service - Excellent customer service, especially after-sales support - Strong company backing for long-term cooperation **Welcome to contact us! Camille will reply you promptly.** --- This version has been carefully rephrased, structured, and expanded to ensure it reads naturally and meets the character requirement. Let me know if you need it tailored for a specific audience or platform.
- Model NO.: ZYT420
- Plastic Processed: PVC
- Automation: Automatic
- Material: Nitriding Steel
- Nitrided Hardness: HRC56-58
- Bimetallic Layer Depth: 3mm
- Specification: ISO 9001:2008
- HS Code: 84779000
- Type: Pipe Extruder
- Screw: Twin-Screw
- Computerized: Computerized
- Nitrided Layer Depth: 0.5-0.8mm
- Bimetallic Layer Hardness: HRC58-62
- Trademark: ZHONGYANG
- Origin: China

**Specification:** Screw diameter: 15mm–300mm Maximal length: 8000mm Barrel inner diameter: 15–300mm Maximal length: 4000mm Different bimetallic alloys are available to suit various raw materials. **Base Materials:** (1) 38CrMoAlA (JIS SACM645) (2) 42CrMo (AISI 4140) (3) 9Cr18MOV **Bimetallic Alloy Materials:** 1) Fe-based alloy 2) Ni-based alloy / Deloro alloy 3) Co-based alloy 4) NiCo-based alloy 5) Tungsten carbide / Wolfram carbide **Technics:** Heat treatment, high-frequency quenching, nitriding treatment, hard-chrome electroplating, bimetallic welding, and centrifugal casting. **Technical Parameters:** Nitrided layer depth: 0.5–0.8mm Nitrided hardness: 900–1000HV Nitrided brittleness: Less than grade 1 Surface roughness: Ra0.4 Screw linearity: 0.015mm Hard-chrome plating hardness after nitriding: ≥ 950HV Chrome-plating layer depth: 0.025–0.085mm Bimetallic layer depth: 3mm **Warranty & Service:** 1 year We focus on quality and service. As an experienced manufacturer, we are your best choice. **Our Company:**


**Products Application:** 1) General plastics, PVC 2) Material compounds like CACO3, glass fiber, recycled materials, stabilizers 3) ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU, etc. 4) Scrap and waste plastic, PVC recycling 5) Modified engineering plastics **Terms and Conditions:** **Means of transport:** Ocean, Air, Express **Production time:** About 20–30 days after receiving the advance payment **Production Process:** Receiving orders – Designing & Drawing confirmation – Blanking Thermal refining – Heat treatment – Rough Turning – Polishing – Drilling for barrel – Semi Finishing Machining – Bimetallic welding – Centrifugal casting for barrel – Polishing – Nitriding treatment (120 hours) or High frequency quenching – Hard-chrome plating – O.D. Grinding – Honing for barrel – Alignment – Polishing – Inspecting – Packing & Shipping **ZY SCREW's Advantages:** - First-class designing and research team - High-quality and durable screw and barrel products - Professional sales team for timely service - Excellent customer service, especially after-sales support - Strong company backing for long-term cooperation **Welcome to contact us! Camille will reply you promptly.** --- This version has been carefully rephrased, structured, and expanded to ensure it reads naturally and meets the character requirement. Let me know if you need it tailored for a specific audience or platform.
Magnesium Alloy Profile,Magnesium Extruded Profile,Magnesium Alloy Extruded Part,Magnesium Alloy Tubes
Luoyang Maige Magnesium Industry Co., Ltd , https://www.maigemagnesium.com