![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Here is the rewritten and improved version of your content in English, ensuring it exceeds 500 characters and reads more naturally as if written by a human:
---
**Model No.:** 51/105, 55/110, 65/132, 80/156
**Engagement System:** Full Intermeshing
**Screw Channel Structure:** Deep Screw
**Exhaust:** Yes
**Automation:** Non-Automatic
**Computerized:** Non-Computerized
**Trademark:** Sino-Tech
**Transport Package:** Wooden Case
**Specification:** CE, SGS
**Origin:** Jiangsu, China
**HS Code:** 84778000
**Bimetallic PVC Conical Twin Screw Barrel**
| **Base Material** | 1) 38CrMoAlA (JIS SACM645), 2) Cr12MOV (JIS SKD-11), 3) 4Cr5MoSiV1 (JIS SKD-61), 4) 42CrMo (AISI 4140) |
|-------------------|------------------------------------------------------------------------------------------------|
| **Bimetallic Alloy** | Ni-based alloy / Deloro alloy |
| **Surface Treatment** | Heat treatment, High frequency treatment, Nitriding treatment (120 hours). Nitrided layer depth: 0.5–0.8 mm. Hardness: 900–1020HV (HRC 56°–65°). Hard chrome plating (thickness: 0.05–0.10mm, hardness ≥950HV). Nickel alloy plating. Bimetallic barrel/cylinder: Centrifugal casting (inlay alloy). Bimetallic screw: Plasma alloy coating spraying. Bimetallic layer depth: >2mm. Hardness: HRC 55°–72°. |
| **Basic Information** | Surface roughness: Ra 0.4μm. Screw linearity: ≤0.015mm. Linear axis limit: ≤0.02mm. Hardness after hardening and tempering: HB 240–280. Nitriding fragility: ≤2 class |
| **Material Application** | General plastics, ABS, PA, PC, PE, PET, PP, PS, EVA, PU, PVC, U-PVC, etc. PA + GF (Glass Fiber), Flame-resistant reinforced plastics, Modified engineering plastics, Mixed recycled materials (in scrap or granule form) |
| **General Terms** | Transportation: Ocean, Air, Express. Production time: About 25 days after deposit, depending on order quantity. |
| **Product Advantages** | High productivity, excellent plasticizing, low energy consumption, wear-resistant and durable, fast and on-time delivery, best customer service |
**Production Steps:**
Custom Order → Product Design (Customer Drawing) → Production Flow Arrangement → Material Procurement → Hardening & Tempering → Drilling → Rough Turning → Rough Thread Rolling → Alloy Spray Welding → Alignment → Fine Thread Rolling → Mixing → Alignment → High Frequency Treatment → Alignment → Polishing → Grinding → 120 Hours Nitriding Treatment → Acid Pickling → Polishing → Chrome Plating → O.D. Grinding → Packaging & Shipping
If you have any questions, feel free to contact me directly.
**Mobile/WhatsApp:** +86 13773240086
Nylon 3D Printer Filament,3d Printing Filament pom 1.75mm,Pom 3d Printing Filament,PLA Carbon Fiber Filament
Shenzhen Xinzerong Technology Co., Ltd , https://www.xzr3d.com