Φ20–Φ110 mm HDPE Pipe Extrusion Line by QTech-Machinery

Φ20–Φ110 mm HDPE Pipe Extrusion Line by QTech-Machinery

A Complete HDPE Pipe Production Solution from a Professional Manufacturer in China

In this video, QTech-Machinery presents a complete Φ20–Φ110 mm HDPE pipe extrusion line designed for high-quality PE water supply pipe production. As a trusted HDPE pipe extrusion line manufacturer in China, QTech-Machinery provides integrated plastic pipe production systems covering material feeding, drying, extrusion, gravimetric dosing, color stripe co-extrusion, pipe forming, vacuum calibration, spray cooling, servo haul-off, cutting, winding, stacking, and after-sales technical support.

This production line is engineered for manufacturers who need a reliable, efficient, and flexible solution for producing small and medium diameter HDPE pipes. The line is suitable for HDPE water supply pipe manufacturing, irrigation pipe production, municipal pipeline projects, and other PE pipe applications requiring stable output and consistent pipe quality.

The HDPE pipe extrusion line shown in this video is configured for pipe diameters from 20 mm to 110 mm, with a designed output of 200–250 kg/h. It is equipped with an SJ75/33 single-screw extruder, double-layer gravimetric metering system, SJ25/25 color stripe co-extruder, high-speed PE pipe die, 9-meter vacuum calibration tank, two 6-meter spray cooling tanks, three-caterpillar servo haul-off, combined cutting system, pipe winders, stacker, and spare parts package.

This video is a detailed demonstration of how QTech-Machinery supports global customers with customized HDPE pipe production equipment and complete turnkey-style solutions.

Project Background

Why This HDPE Pipe Extrusion Line Was Developed

The customer required a complete HDPE pipe production line for manufacturing PE water supply pipes within the diameter range of Φ20–Φ110 mm. The production line needed to handle PE100 grade HDPE material, produce black pipes with four color stripes, and maintain stable output during continuous operation.

The customer was not only looking for individual machines, but a complete and coordinated production system. The line needed to combine material handling, precision extrusion, pipe forming, cooling, traction, cutting, winding, and straight pipe collection into one stable manufacturing process.

QTech-Machinery designed the solution based on several key production goals:

1. Stable production of HDPE pipes from 20 mm to 110 mm.
2. Output capacity of 200–250 kg/h.
3. Accurate pipe size and wall thickness control.
4. Smooth pipe surface and reliable pipe roundness.
5. Continuous production with reduced manual operation.
6. Flexible pipe collection by winding or stacking.
7. Easy operation, maintenance, and future service support.

This video introduces the complete configuration and working process of the production line, helping customers understand how each machine contributes to final pipe quality and production efficiency.

Project Overview

Basic Information of the HDPE Pipe Extrusion Line

Main Purpose of the Video

This video is created to show international buyers how a complete HDPE pipe extrusion line is configured and how QTech-Machinery designs production equipment according to real customer requirements.

The video can help viewers understand:

Project Requirement

Customer Production Needs

The customer needed a production line capable of making HDPE water supply pipes in a wide range of common pipe diameters. The line had to be suitable for long-term industrial operation and flexible enough to support different production orders.

The requested pipe diameter range covered:

Core Technical Requirements

The customer’s requirements were not limited to pipe size. The complete line also needed to achieve good coordination between extrusion speed, cooling capacity, haul-off stability, and downstream handling.

Production Challenges

Producing HDPE pipes from 20 mm to 110 mm on one line requires careful machine matching. Smaller pipes may require higher line speed and smooth winding, while larger pipes need stronger traction, sufficient cooling, and stable cutting.

QTech-Machinery considered the following challenges during project design:

1. Different pipe diameters require different cooling times.
2. Pipe wall thickness must remain stable during speed changes.
3. Color stripes must be evenly formed on the pipe surface.
4. The haul-off system must pull without deforming the pipe.
5. The cutter must match pipe diameter and wall thickness.
6. Finished pipes may need either coiling or straight discharge.
7. Operators need a simple and reliable control interface.
8. The entire line must be easy to maintain over long production periods.

Solution Provided by QTech-Machinery

Complete Line Design

QTech-Machinery provided a fully integrated HDPE pipe extrusion line. Instead of treating each machine as a separate unit, the line was engineered as a complete production system. This means that the extruder, die, vacuum tank, cooling tanks, haul-off, cutter, winder, and stacker were selected to work together smoothly.

The production process includes:

1. HDPE raw material loading.
2. Material drying and preparation.
3. Main extrusion through SJ75/33 single-screw extruder.
4. Gravimetric material control.
5. Color stripe co-extrusion.
6. Pipe forming through high-speed PE pipe die.
7. Vacuum calibration.
8. Spray cooling.
9. Servo-controlled pipe haul-off.
10. Pipe cutting.
11. Pipe winding or stacking.
12. Maintenance support with spare parts.

Main Advantages of the Proposed Solution

Video Section 1: Automatic Material Loading

QX-900 Automatic Vacuum Loading System

The video begins with the automatic vacuum loading system. This machine is responsible for conveying HDPE granules into the feeding system without frequent manual operation.

The QX-900 system helps maintain stable raw material supply, especially during continuous production. For pipe manufacturers, stable feeding is important because any interruption in material supply may affect extrusion pressure, pipe wall thickness, and finished pipe quality.

Why Automatic Loading Matters

Automatic loading improves production efficiency in several ways. It reduces the need for operators to manually carry material to the extruder, keeps the feeding process cleaner, and helps the line run for longer periods without interruption.

For customers planning industrial pipe production, automatic loading is a practical configuration that supports stable output and workshop efficiency.

Video Section 2: Material Drying

Hopper Dryer for HDPE Material Preparation

Before entering the extruder, HDPE material should be properly prepared. The hopper dryer helps reduce the influence of moisture and supports stable plasticizing performance.

Although HDPE has relatively low water absorption compared with some other plastics, proper material preparation is still important for stable extrusion, especially when raw material storage conditions vary.

Contribution to Pipe Quality

A stable drying and feeding process helps the main extruder work under more consistent conditions. This reduces production fluctuations and supports smoother pipe appearance.

Video Section 3: Main Extrusion System

SJ75/33 Single-Screw Extruder

The SJ75/33 single-screw extruder is the core machine of the production line. It melts and plasticizes the HDPE material, then pushes the molten polymer toward the pipe die under stable pressure.

For this project, QTech-Machinery selected the SJ75/33 extruder to match the customer’s required output of 200–250 kg/h and pipe diameter range of Φ20–Φ110 mm.

Extruder Heating and Cooling System

The extruder uses multiple heating and cooling zones to maintain suitable melt temperature during HDPE processing.

Why the SJ75/33 Extruder Was Selected

This extruder offers a balance between production output, melt stability, and energy performance. The 33:1 L/D ratio provides enough plasticizing length for HDPE material, while the 75 mm screw diameter supports the required output range.

The Siemens PLC and touchscreen interface also make operation more convenient. Operators can monitor production parameters, adjust speed, and control the extrusion process through a user-friendly interface.

Video Section 4: Gravimetric Metering System

Double-Layer Gravimetric Control

The gravimetric metering system is an important part of this HDPE pipe extrusion line. It measures and controls material feeding based on weight, helping maintain consistent pipe meter weight and wall thickness.

For pipe manufacturers, raw material cost is a major part of production cost. A gravimetric system can help reduce unnecessary material usage while improving production accuracy.

How Gravimetric Dosing Helps HDPE Pipe Production

The system continuously tracks the amount of material being fed into the extruder. When extrusion speed or haul-off speed changes, the metering system helps keep the pipe weight more stable.

This is especially useful for PE water pipe production, where wall thickness and pipe weight must remain within acceptable tolerance ranges.

Video Section 5: Color Stripe Co-extrusion

SJ25/25 Color-Stripe Co-extruder

The SJ25/25 co-extruder adds color stripes to the HDPE pipe surface. In this project, the customer required black HDPE pipes with four color stripes.

Color stripes are commonly used for pipe identification. For example, blue stripes may indicate water supply pipe, while other colors may be used for different applications depending on local market standards.

Function of Color Stripes

Color stripes improve product recognition and market acceptance. They help customers and installers identify the pipe application more easily.

For the buyer in this project, the four-stripe design makes the pipe suitable for PE water supply pipe production and supports professional product appearance.

Video Section 6: High-Speed PE Pipe Die

Φ20–Φ110 mm Pipe Die

The pipe die determines the initial shape of the pipe. It must distribute molten HDPE evenly around the pipe circumference to ensure smooth surface, stable wall thickness, and proper pipe roundness.

QTech-Machinery configured a high-speed PE pipe die for the full size range from 20 mm to 110 mm.

Pipe Die Manufacturing Features

The die components are processed through rough machining, finish machining, polishing, and internal electroplating. The spiral distributor is machined to help improve melt balance and reduce uneven flow.

A stable die design helps reduce common pipe defects such as uneven wall thickness, surface marks, and poor roundness.

Video Section 7: Vacuum Calibration

9-Meter Vacuum Calibration Tank

After the pipe exits the die, it enters the vacuum calibration tank. This stage is critical because the pipe is still hot and needs to be shaped accurately.

The vacuum tank uses vacuum pressure and cooling water spray to pull the pipe outer surface against the sizing sleeve and stabilize the pipe diameter.

Additional Features of the Vacuum Tank

Importance of Vacuum Calibration

The vacuum calibration stage has a direct effect on the finished pipe’s outer diameter, roundness, and surface quality. For PE water supply pipes, stable sizing is essential for meeting technical and market requirements.

Video Section 8: Spray Cooling Section

Two 6-Meter Spray Cooling Tanks

After initial calibration, the pipe continues through two spray cooling tanks. These tanks remove remaining heat from the pipe and help stabilize pipe shape before haul-off and cutting.

Cooling System Benefits

A longer cooling section is especially important when producing thicker-wall pipes or larger pipe diameters. If the pipe is not sufficiently cooled before haul-off, it may deform under traction or during cutting.

The two spray cooling tanks provide stable cooling support for the full pipe range from 20 mm to 110 mm.

Video Section 9: Servo Haul-off System

Three-Caterpillar Servo Haul-off Unit

The haul-off machine pulls the pipe at a controlled speed. It must work in synchronization with the extrusion output. If the haul-off speed is too fast, pipe wall thickness may become thinner. If it is too slow, the pipe may become thicker or unstable.

For this project, QTech-Machinery configured a three-caterpillar servo haul-off unit.

Servo Haul-off Advantages

The servo system provides more accurate control of pipe pulling speed. This helps improve pipe dimension stability and supports smoother operation during speed adjustment.

The three-belt structure provides strong and balanced contact with the pipe, helping avoid slipping and reducing the risk of pipe deformation.

Video Section 10: Cutting System

Ring-Type Chipless Cutter

The cutting system is used to cut the pipe into required lengths or prepare pipes for downstream collection. In this line, QTech-Machinery configured a combined system: fly-knife cutter plus ring-type chipless cutter.

Cutting System Benefits

The combined cutting design gives the customer more flexibility for different pipe sizes and production requirements. The fly-knife cutter is practical for continuous cutting, while the chipless cutting method helps reduce chips and improve cleanliness in certain applications.

A stable cutting system also supports better pipe-end quality and easier downstream handling.

Video Section 11: Pipe Winding System

20–63 mm Double-Station Pipe Winder

Small-diameter HDPE pipes are often collected in coils. For this purpose, the line includes a double-station pipe winder for smaller pipe sizes.

Benefits of Double-Station Winding

The double-station structure allows operators to switch rolls more efficiently. This reduces downtime and supports continuous production for small-diameter pipes.

The automatic traversing function helps arrange the pipe more evenly on the roll, improving final coil appearance.

Video Section 12: Large Pipe Winding

75–110 mm Single-Station Pipe Winder

For larger coiled pipe sizes, QTech-Machinery configured a single-station pipe winder suitable for Φ75–Φ110 mm pipes.

Why Large Pipe Winding Is Useful

Coiled HDPE pipes are easier to transport and install in many applications, especially irrigation and water supply projects. By including a winder for 75–110 mm pipes, the customer gains more flexibility in product supply.

Video Section 13: Stacking System

Discharge and Stacking Rack

For straight pipe production, the line includes a discharge and stacking rack. This equipment receives the pipe after cutting and helps organize finished products in the workshop.

Production Flexibility

With both winders and a stacker, the same extrusion line can support different product forms. This is useful for customers serving multiple market needs.

Video Section 14: Spare Parts and Maintenance Support

Free Spare Parts Package

To support the customer’s long-term operation, QTech-Machinery provided a spare parts package with the HDPE pipe extrusion line.

Why Spare Parts Matter

Spare parts help reduce unexpected downtime and make maintenance easier. For overseas customers, having common spare parts available at the factory can save time and improve production continuity.

QTech-Machinery also provides technical guidance, installation support, commissioning assistance, operator training, and lifetime technical service.

Complete Production Flow

From Raw Material to Finished HDPE Pipe

The production process shown in the video follows a clear and practical workflow.

Main Technical Highlights in the Video

Stable Extrusion Performance

The SJ75/33 extruder is designed to deliver stable melt output for HDPE pipe production. The screw and barrel are made from nitrided 38CrMoAlA, improving wear resistance and service life.

Accurate Meter Weight Control

The double-layer gravimetric metering system helps monitor material usage in real time. This supports more consistent pipe wall thickness and helps reduce unnecessary material consumption.

Professional Pipe Forming

The high-speed PE pipe die uses 40Cr material and copper sizing sleeves. The spiral distributor helps ensure more balanced melt flow around the pipe circumference.

Efficient Cooling and Sizing

The combination of a 9 m vacuum calibration tank and two 6 m spray cooling tanks provides enough cooling length for the full pipe diameter range.

Servo-Controlled Haul-off

The three-caterpillar servo haul-off improves pulling stability and helps synchronize the downstream section with the extrusion output.

Flexible Pipe Collection

The line can collect small pipes by double-station winder, larger coiled pipes by single-station winder, and straight pipes by stacker.

Benefits for HDPE Pipe Manufacturers

Improved Production Efficiency

This HDPE pipe extrusion line reduces manual work through automatic material loading, controlled extrusion, servo haul-off, automatic cutting, and pipe winding or stacking.

Better Product Consistency

With gravimetric metering, stable extrusion, precision moulding, and strong cooling, the line supports consistent pipe diameter, wall thickness, and surface quality.

Wider Product Range

The line can produce multiple pipe sizes from 20 mm to 110 mm, allowing the customer to serve different markets with one production system.

Lower Material Waste

Accurate feeding and meter weight control help reduce overuse of HDPE raw material, which can improve long-term production economy.

Easier Operation

PLC control, touchscreen interface, digital speed display, and practical mechanical design make the line easier for operators to manage.

Strong Market Adaptability

The finished pipes can be used in water supply, irrigation, municipal pipeline networks, and general PE pipe applications.

Why Choose QTech-Machinery

Professional HDPE Pipe Extrusion Line Manufacturer in China

QTech-Machinery focuses on plastic extrusion machinery and provides customized solutions for global customers. For HDPE pipe projects, QTech-Machinery can design the production line according to pipe diameter, wall thickness, material, output capacity, workshop space, and local power supply conditions.

Customized Engineering Support

Every customer may have different pipe standards, production requirements, and factory layouts. QTech-Machinery provides technical consultation and customized line configuration instead of offering only standard machine packages.

Complete Machine Supply

QTech-Machinery can provide a complete line including:

Reliable Component Selection

The line uses reliable components from brands such as Siemens, ABB, Schneider, Omron, Mettler Toledo, and other qualified suppliers. This helps improve machine stability and long-term operation performance.

After-Sales Service

QTech-Machinery supports customers with:

1. Installation guidance.
2. Machine commissioning.
3. Operator training.
4. Spare parts supply.
5. Process adjustment support.
6. Technical troubleshooting.
7. Lifetime technical assistance.

Suggested Voiceover Script for the Video

Opening

Welcome to QTech-Machinery. In this video, we introduce a complete Φ20–Φ110 mm HDPE pipe extrusion line designed for PE water supply pipe production.

As a professional HDPE pipe extrusion line manufacturer in China, QTech-Machinery provides customized plastic pipe production solutions for global customers.

Production Line Introduction

This HDPE pipe extrusion line is suitable for producing pipes from 20 mm to 110 mm. The designed output is 200 to 250 kilograms per hour, and the complete line length is approximately 55 meters.

The finished pipes are black HDPE water supply pipes with four color stripes. The line is suitable for PE100 grade raw material and can meet common water pipe production requirements.

Material Feeding Section

The production process starts with the automatic vacuum loading system and hopper dryer. The vacuum loader conveys HDPE granules automatically, reducing manual feeding work and ensuring continuous material supply.

The hopper dryer prepares the material before extrusion and helps improve plasticizing stability.

Main Extruder Section

The SJ75/33 single-screw extruder is the core of the line. It is equipped with a 75 mm screw, 33:1 L/D ratio, Siemens PLC control, MCGS touchscreen, ABB inverter, and 110 kW Siemens motor.

The screw and barrel are made of nitrided 38CrMoAlA, providing good wear resistance for long-term HDPE pipe production.

Gravimetric Metering Section

A double-layer gravimetric metering system is used to control material feeding accuracy. It helps stabilize pipe meter weight, improve wall thickness consistency, and reduce material waste.

Color Stripe Co-extrusion

The SJ25/25 color-stripe co-extruder is used to produce four color stripes on the black HDPE pipe. This makes the pipe easier to identify for water supply applications.

Pipe Die and Forming

The high-speed PE pipe die supports pipe sizes from 20 mm to 110 mm. It uses 40Cr die steel, copper sizing sleeves, water-jacket cooling, and a precision spiral distributor to ensure stable melt flow and good pipe forming.

Vacuum Calibration and Cooling

After extrusion, the pipe enters the 9-meter vacuum calibration tank. This tank helps control the pipe outer diameter, roundness, and surface quality.

Then the pipe passes through two 6-meter spray cooling tanks for further cooling and shape stabilization.

Haul-off and Cutting

The three-caterpillar servo haul-off pulls the pipe smoothly and accurately. The servo drive system helps synchronize the haul-off speed with the extrusion output.

The cutting system combines a fly-knife cutter and ring-type chipless cutter, providing flexible cutting options for different pipe sizes.

Winding and Stacking

For small pipe sizes, the double-station pipe winder allows continuous coiling and reduces roll-changing time.

For 75 to 110 mm pipes, the single-station winder supports larger pipe coils.

For straight pipe production, the stacker receives and organizes the cut pipes automatically.

Closing

This complete HDPE pipe extrusion line shows QTech-Machinery’s ability to provide practical, efficient, and customized pipe production solutions.

If you are looking for an HDPE pipe extrusion line manufacturer in China, contact QTech-Machinery with your pipe diameter, wall thickness, output requirement, and factory layout. Our team will provide a suitable technical solution for your project.