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**Injection Moulding Machine Screw**
**Basic Information:**
- **Model No.:** Dia 20mm - 220mm
- **Certificate:** ISO 9001
- **Nitrided Layer Depth:** 0.5 - 0.8 mm
- **Nitrided Brittleness:** Less than Grade 1
- **Surface Roughness:** Ra 0.4
- **Trademark:** Zhongyang
- **Origin:** Zhejiang, China
**Additional Specifications:**
- **Screw Barrel:** Used in Injection Moulding Machines
- **Application:** Suitable for injection molding equipment
- **Nitrided Hardness:** 900 - 1000 HV
- **Bimetallic Layer Depth:** 3 mm
- **Linearity of Screw:** 0.015 mm
- **Specification:** ISO 9001:2008 certified
- **HS Code:** 84779000
**Technical Details:**
**Base Materials:**
1. 38CrMoAlA (JIS SACM645)
2. 42CrMo (AISI 4140)
3. 4Cr5MoSiV1 (JIS SKD-61)
4. 9Cr18MOV
5. HPT
**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
**Manufacturing Techniques:**
- Heat treatment
- High-frequency quenching
- Nitriding treatment
- Hard-chrome electroplating
- Bimetallic alloy welding
- Bimetallic alloy centrifugal casting
**Why Choose Zhongyang?**
**Working Attitude:**
At Zhongyang, every team member is dedicated and committed to their role. We take pride in our work and are passionate about delivering quality results that contribute to the success of our company and our customers.
**Factory Strength:**
Our factory is located in Jintang Town, Zhoushan City, Zhejiang Province. Covering an area of 10,000 square meters, we are equipped with advanced CNC machines and have over 12 years of industry experience. Our professional teams cover sales, design, production, inspection, and customer service. We are always ready to meet your specific needs.
**Quick Response:**
Our well-trained sales team is enthusiastic and efficient, ensuring fast and effective communication with our clients.
**Technical Capabilities:**
We have a team of experienced engineers who provide expert solutions and help design high-performance screws and barrels tailored to your requirements.
**Quality Assurance:**
As an ISO-certified company since 2006, we maintain a strict quality control system throughout the entire production process, from raw materials to finished products. Every step is inspected to ensure only top-quality products reach our customers.
**After-Sales Service:**
We provide full support from the start of cooperation until the product is successfully tested. If any issues arise, our after-sales team will resolve them quickly. In urgent cases, we can even send engineers to your location, whether you're in China or abroad.
With our rich experience and commitment to excellence, Zhongyang is the best choice for injection moulding machine screws and related components. Let us be your trusted partner in the industry.