A Comprehensive Guide to HDPE Pipe Extrusion Lines

HDPE pipes are currently widely used in urban underground drainage and water supply. HDPE pipe extrusion line is used to continuously produce these pipes. HDPE granules material enter the screw barrel for melting and plasticization and are extruded into shape through pipe die molds.

At present, the HDPE pipe extrusion line sold by our company can produce up to a maximum outer diameter of 2 meters. Our company has been specializing in the research and manufacturing of HDPE pipe extrusion production lines for over 30 years. With a strong team of hundred engineers and a professional overseas after-sales service team, we continuously provide high-end pipeline extrusion lines and advanced solutions to customers around the world.

What is HDPE Pipe Extrusion?

HDPE raw material particles are fed into the barrel of the extruder through a vacuum loader, and the raw materials are stirred with a single screw to reach a molten state for plasticization. During this process, a temperature control system is used to adjust the temperature. The plasticized raw materials are extruded into a rough shape through a pipe die mold, and then enter a vacuum cooling calibration tank to complete the final pipe shape. Then, through a traction machine, cut or wind according to a certain length, and finally packed into storage.

Key Components of HDPE Pipe Extrusion Lines

1. Extruder: Our core components (screw barrel, pipe mold, metal parts) are self-made. Our extruder screw barrel factory was established in 1978 and continuously develops and breaks through screw extrusion technology. The extruders all adopt PLC computer operation screen, all production line data is visually managed.

2. The mold is manufactured using advanced German spiral technology, and the main components are made of high-quality mold steel. The surface of the core rod of the mouth mold is polished, and a temperature sensor is installed inside the mold. The material is evenly distributed, with low shear heat, and the mouth mold is easy to adjust. It is suitable for matching different pressure levels of mouth molds and core molds.

3. Our standard vacuum calibration table has a length of 9 meters and is made of high-quality 304 stainless steel material. The newly optimized water pipeline design is energy-efficient and efficient.

4. The traction machine is equipped with servo frequency conversion, and the traction pressure and speed can be adjusted. It adopts an encoder length measuring device.

5. Dust free cutting, with cutting accuracy far higher than peers.

Features of Quality HDPE Pipe Production Lines

1. Automation and Control Systems:

PLC Control: Automated control with PLCs for consistent and precise operations.

Real-Time Monitoring: Sensors for tracking and adjusting key parameters like temperature and pressure.

2. Screw Design:

Optimized Geometry: Screws designed for HDPE to ensure efficient melting and mixing.

Durable Materials: Wear-resistant screws for prolonged use and consistent performance.

3. Haul-Off Devices:

Precision Pullers: Maintain correct pipe dimensions with consistent pulling force.

Synchronization: Coordinated with extruder speed to prevent deformations.

4. Dies and Calibration:

High-Quality Dies: Ensure uniform wall thickness and accurate diameter.

Vacuum Calibration Tanks: Provide immediate cooling and dimension stabilization.

5. Efficient Material Handling:

Automatic Feeding: Ensures a steady supply of HDPE granules, reducing downtime.

Material Drying: Prevents defects by properly conditioning the HDPE material.

6. Precise Temperature Control:

Multi-Zone Heating: Allows precise control for optimal HDPE processing.

Efficient Cooling: Stabilizes the extruded pipe to maintain accuracy and properties.

Maintenance and Troubleshooting of HDPE Pipe Production Lines

1. Ripples appear on the surface of the pipe

1)Insufficient cooling: increase the water intake of the fixed diameter sleeve or increase the spacing between the mouth mold and the fixed diameter sleeve.

2)Improper size of the sealing ring, causing vibration: vacuum box sealing ring size is too small, replace the seal circle or appropriately reduce the vacuum degree of the first vacuum box, and increase the vacuum degree of the second vacuum box.

2. There are pits on the inner surface

1)Impurities in raw materials: check the raw materials.

2)The inner wall between the mouth mold and the core mold is not cleaned thoroughly: cleaning the mouth mold and core mold.

3. Uneven surface of pipes

1)Wet raw materials: Drying of raw materials.

2)Uneven water volume in the fixed diameter sleeve: adjust the water volume in the fixed diameter sleeve or replace it.

4. The surface of the pipe is not shiny

Impurities on the fixed diameter sleeve, support plate, and sealing ring: Clean the fixed diameter sleeve, support plate, and sealing ring.

Types of HDPE Pipe Extrusion Lines

As we have hundreds of professional technology engineers, so according to customers' final HDPE pipe requirements, we can provide customized HDPE pipe extrusion lines, such as Single-layer HDPE pipe/multi-layer pipe/RFT pipe/composited pipe extrusion line.

Here are the top-selling HDPE pipe extrusion line types available at our company：

High Speed and Energy Saving HDPE Pipe Extrusion Line

Multi-layer HDPE Solid Wall Pipe Co-extrusion Line

Large Diameter 800-2000mm HDPE Water Gas Supply Pipe Extrusion Line

We're willing to develop a new kind of HDPE pipe with customers to promote industry development.