38Crmoal Bimetallic Twin Barrel,Injection Bimetallic Haitian Barrel Screw,Twin Bimetallic Screw Barrel,Bimetallic Twin Barrels Zhejiang Guangming Plastics Machinery Co.,Ltd. , https://www.gmscrews.com
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**Product Specifications:**
- **Model Number:** Customized
- **Size:** Customized
- **Nitriding Layer Depth:** 0.5–0.8 mm
- **Bimetallic Layer Hardness:** HRC 58–62
- **Trademark:** ZHONGYANG
- **Origin:** China
**Additional Technical Details:**
- **Certification:** ISO 9001:2008
- **Material:** Nitriding Steel
- **Nitriding Hardness:** HRC 56–58
- **Bimetallic Layer Thickness:** 3 mm
- **Specification:** ISO 9001:2008
- **HS Code:** 84779000
**Key Features:**
- **Screw Diameter:** Ø 20 mm – Ø 220 mm
- **Mold Clamping Force:** 250T – 3200T
- **Shot Weight:** 30g – 30,000g
**Base Materials:**
1. 38CrMoAlA (JIS SACM645)
2. 42CrMo (AISI 4140)
3. 4Cr5MoSiV1 (JIS SKD-61)
**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 hardening
- Nitriding treatment
- Hard chrome plating
- Bimetallic welding
- Bimetallic centrifugal casting
**Technical Parameters:**
- **Nitriding Layer Depth:** 0.5–0.8 mm
- **Nitriding Hardness:** 900–1000 HV
- **Nitriding Brittleness:** Less than Grade 1
- **Surface Roughness:** Ra 0.4 μm
- **Screw Straightness:** 0.015 mm
- **Hard Chrome Plating Hardness after Nitriding:** ≥ 950 HV
- **Chrome Plating Thickness:** 0.025–0.085 mm
- **Bimetallic Layer Thickness:** 3 mm
**Warranty & Service:**
- 1-year warranty
- Focused on quality and customer satisfaction
- Professional manufacturing experience
- We are your best choice for reliable and high-quality products
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