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Help CenterHigh Quality HDPE Hollow Wall Spiral Krah Pipe Extrusion Machine
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Qingdao Yongke Machinery Co., Ltd., established in 2010 with a factory area of 10,000–30,000 square meters and a dedicated team of 51–100 employees, introduces our High Quality HDPE Hollow Wall Spiral Krah Pipe Extrusion Machine. This advanced production line is designed to manufacture spiral-wound hollow wall pipes from HDPE, offering exceptional strength, light weight, and corrosion resistance for demanding infrastructure projects. Our machine integrates proven extrusion technology with precise control systems, ensuring consistent wall thickness and superior pipe quality. With annual export value exceeding US$1 million and a global customer base spanning North America, Europe, Asia, and Africa, Yongke Machinery stands as a reliable partner for pipe manufacturers worldwide.
The HDPE Hollow Wall Spiral Krah Pipe Extrusion Machine adopts a unique spiral winding process to create pipes with a hollow, corrugated profile. This structure significantly reduces material consumption while maintaining high ring stiffness (SN8–SN16), making it ideal for underground drainage, sewage systems, and cable protection. The machine is equipped with a high-torque extruder, a specially designed spiral forming die, a cooling tank, a haul-off unit, and a cutting system—all integrated into a fully automated production line. Below are the key technical specifications:
| Parameter | Specification |
| Pipe Diameter Range | 200 – 1200 mm |
| Output Capacity | 150 – 300 kg/h (depending on pipe size) |
| Screw Diameter | 75 / 90 / 120 mm |
| Motor Power | 55 – 110 kW |
| Wall Thickness | 2.0 – 8.0 mm (adjustable) |
| Ring Stiffness | SN8 / SN10 / SN12.5 / SN16 (optional) |
| Line Speed | 0.5 – 2.5 m/min |
| Screw L/D Ratio | 30:1 / 33:1 |
- Energy-efficient extruder with bimetallic barrel ensures long service life and stable melt quality.
- Spiral forming die produces uniform hollow cavities, reducing material cost by up to 30% compared to solid wall pipes.
- Vacuum calibration system guarantees precise outer diameter and roundness.
- PLC-based control system with touch screen interface allows easy parameter adjustment and data logging.
- Automatic cutting saw with length measurement ensures precise pipe lengths (4m, 6m, or custom).
- Optional downstream equipment: belling machine, socket forming unit, stacker, etc., available on request.
Our HDPE Hollow Wall Spiral Krah Pipe Extrusion Machine is built to meet international standards including ISO 9001, ISO 14000, and OHSAS 18001 certifications, ensuring quality, environmental responsibility, and occupational safety. The machine is shipped from Qingdao Port, with professional installation and commissioning services provided by our experienced engineers. We also offer spare parts supply and technical support throughout the machine's life.
With 51–100 skilled employees and an annual export value of US$1–1.5 million, Qingdao Yongke Machinery has delivered machines to clients in North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and other regions. Our factory covers 10,000–30,000 square meters, equipped with advanced CNC machining centers and testing facilities. Many of our customers have achieved significant cost savings and improved production efficiency after adopting our spiral krah pipe technology. We invite you to contact us for a detailed proposal or a factory visit. Choose Yongke Machinery as your trusted partner for high-quality HDPE pipe extrusion solutions.
Frequently Asked Questions (FAQ)
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What is the raw material requirement for this machine?
We recommend using HDPE virgin or recycled granules with a melt flow index (MFI) of 0.2–1.0 g/10 min (at 190°C/5kg). The machine is compatible with standard HDPE grades used for pipe extrusion. -
What is the typical pipe diameter range that can be produced?
The standard model covers diameters from 200 mm to 1200 mm. Customized sizes outside this range are available upon request with appropriate die modifications. -
How long does it take to install and commission the machine?
Installation and commissioning typically take 10–15 working days, depending on site conditions and local support. We provide on-site training for your operators during the commissioning period. -
Can the machine produce pipes with different ring stiffness classes?
Yes, by adjusting the wall thickness and hollow cavity design, the machine can produce pipes meeting SN8, SN10, SN12.5, or SN16 stiffness classes. The specific settings are provided in our technical manual. -
What is the power consumption of the machine?
Total installed power ranges from 80 kW to 150 kW, depending on the configuration. Actual consumption depends on pipe size and output rate; typical operation consumes about 60–80% of installed power. -
Do you provide after-sales service and spare parts?
Yes, we offer comprehensive after-sales support, including remote troubleshooting, spare parts supply, and optional maintenance contracts. Our service team can be dispatched within 48 hours for urgent cases. -
What certifications does your machine have?
Our factory and production processes are certified under ISO 9001 (quality management), ISO 14000 (environmental management), and OHSAS 18001 (occupational health and safety). The machine components comply with CE standards when required (please specify). -
Can I visit the factory before placing an order?
Absolutely! We welcome factory visits at our facility in Qingdao, Shandong, China. You can see the machine in operation and discuss your specific requirements with our engineers. Please contact us to schedule an appointment.
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