Bimetallic PVC Conical Twin Screw Barrel

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Model No.: 51/105, 55/110, 65/132, 80/156
Engagement System: Full Intermeshing
Screw Channel Structure: Deep Screw
Exhaust: Standard Exhaust
Automation: Non-Automatic
Computerized: Non-Computerized
Trademark: Sino-Tech
Transport Package: Wooden Case
Specification: CE, SGS Certified
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 (120 hours).
Depth of Nitrided Layer: 0.5–0.8 mm.
Hardness of Nitrided Layer: 900–1020 HV (HRC 56°–65°).
Hard Chrome Plating: Thickness 0.05–0.10 mm, Hardness ≥950 HV.
Nickel Alloy Plating: Bimetallic Barrel/Cylinder by Centrifugal Casting (Inlay Alloy), Bimetallic Screw by Plasma Alloy Coating Spraying.
Depth of Bimetallic Layer: >2 mm, Hardness: HRC 55°–72°.

Basic Information
Surface Roughness: Ra 0.4 μm.
Screw Linearity: ≤0.015 mm.
Linear Axis Tolerance: ≤0.02 mm.
Hardness after Hardening & Tempering: HB 240–280.
Fragility of Nitration: ≤2 Class.

Material Application
1) General Plastics
2) ABS, PA, PC, PE, PET, PP, PS, EVA, PU, PVC, U-PVC, etc.
3) PA + GF (Glass Fiber)
4) Flame-resistant Reinforced Plastics
5) Modified Engineering Plastics
6) Various Mixed Recycled Materials (in Scrap or Granule), etc.

General Terms
Shipping Methods: Ocean, Air, Express.
Production Time: Approximately 25 days after receiving a deposit; lead time may vary based on order quantity.

Our Product Advantages
1) High productivity
2) Excellent plasticizing performance
3) Low energy consumption
4) Wear-resistant and durable
5) Fast and on-time delivery
6) Best customer service
**Production Steps:** Custom Order → Product Design (Customer Drawing) → Production Flow Arrangement → Material Procurement → Hardening & Tempering → Drilling → Rough Turning → Rough Thread Rolling → 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. MOB/WA: +86 13773240086 --- This version adds clarity, improves structure, and makes the content more natural and engaging for real users. It is now over 500 characters in length.

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