Conical Twin Screw Barrel

High-efficiency conical twin-screw barrel for PVC, PE, PP pipe and profile extrusion. Excellent plasticizing, high torque, stable output.

Product Overview

Vanwell conical twin screw barrels are engineered for PVC pipe extrusion lines, featuring a tapered screw design that provides high torque transmission and superior plasticizing performance. The conical geometry ensures even material compression, uniform melt quality, and stable production output.


Available in a full range of sizes from small extrusion lines (Ø20/25mm) to large industrial pipes (Ø80/156mm). Suitable for PVC-U, PE, PP, and multi-layer composite pipes. Bimetal barrel lining and nitrided screws ensure long life even with highly abrasive PVC compounds.

Technical Specifications

Center Diameter RangeØ20mm – Ø80mm
Tip Diameter RangeØ25mm – Ø156mm
L/D Ratio18:1 to 25:1
Material38CrMoAlA / Bimetal
Surface TreatmentNitriding / Bimetallic
Compression Ratio1.8:1 – 2.5:1
HardnessHRC 58-65
ApplicationsPVC, PE, PP, Multi-layer

Key Features

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Conical Design

Tapered screw geometry provides progressive compression and uniform melting.

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High Torque Transmission

Strong feeding section handles high viscosity PVC compounds efficiently.

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Bimetal Barrel Lining

Wear-resistant iron-based alloy lining extends barrel life in abrasive conditions.

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PVC-Optimized

Specifically designed for rigid PVC-U pipe with excellent thermal stability.

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Universal Compatibility

Fits Braess, Leistritz, Jinming, and other standard conical twin-screw lines.

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Stable Output

Consistent melt pressure and flow rate for smooth pipe production.

Energy Efficient

Optimized screw clearance reduces motor load and energy consumption.

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Multi-Material

Also suitable for PE, PP, and multi-layer composite pipe production.

Applications

PVC-U Water/Drainage Pipes
PE Gas & Water Pipes
PP-R Hot/Cold Water Pipes
Multi-layer Composite Pipes
PVC Corrugated Pipes
PVC Electrical Conduits
HDPE Large Diameter Pipes
PVC Window/Door Profiles
Wire & Cable Casings

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