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Product Overview
This production line adopts a conical twin-screw extrusion main unit, specifically designed for the production of PVC and CPVC power sheath conduits. CPVC conduits offer high temperature resistance and outstanding insulation properties, while PVC conduits feature good rigidity, corrosion resistance, and moderate cost. Both types of conduits are widely used in cable protection, municipal power grids, and communication wiring projects. The equipment optimizes the extrusion structure for the material characteristics of PVC, ensuring sufficient and stable plasticization and well-formed conduits. Single-die or dual-die heads can be selected to increase output. The entire machine is equipped with a stable temperature control system to inhibit material decomposition and ensure stable production. It supports customization for different diameters and wall thicknesses, and the manufacturer provides one-stop services including installation and commissioning, formula and process guidance, and technical training.
Process flow
Automatic feeding → High-speed mixing → Conical twin-screw plasticization extrusion → Die head forming → Vacuum sizing and cooling → Spray cooling → Traction conveying → Fixed-length cutting → Conduit stacking
Product Advantages
1. The conical twin-screw extruder has strong plasticizing capability, ensuring uniform plasticization of PVC and CPVC materials without easy decomposition, resulting in stable color of the finished product.
2. It features excellent insulation performance, acid and alkali corrosion resistance, and high compressive strength, making it suitable for underground cable protection projects.
3. An optional dual-output die head is available to produce two pipes at once, significantly improving production efficiency.
4. Independent zone temperature control, adaptable to the processing temperature requirements of both PVC and CPVC materials, making it easy to switch and adjust when changing materials.
5. Stable forming process, good pipe roundness, and uniform wall thickness, facilitating subsequent construction and wire pulling.
6. Automated control, simple operation, stable operation, and low failure rate.
7. Supports customization of various specifications, with optional accessories such as online marking and flaring devices available upon request.
Technical Parameters
Raw materials: PVC / CPVC
Products: PVC and CPVC power protective tubes
Production diameter: 16–1000mm
Capacity: 100–800kg/h
Extrusion type: Conical twin-screw extrusion
Extruder models: Optional SJSZ51/105, SJSZ65/132, SJSZ80/156, SJSZ92/188, SJSZ110/220
Screw material: 38CrMoAlA, nitrided
Main motor power: 18.5-160KW
Speed control method: Variable frequency speed control
Heating method: Zoned electric heating with independent temperature control
Temperature control accuracy: ±1℃
Total installed power: 50～300kW