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Qingdao Yongke Machinery Co., Ltd., established in 2010, is a specialized manufacturer of HDPE pipe production lines. With over a decade of experience and a factory covering 10,000–30,000 square meters, we present our HDPE Spiral Winding Krah Pipe Machine for Underground Drainage Systems. This advanced equipment is engineered to produce high-strength, corrosion-resistant spiral wound pipes ideal for stormwater management, sewer lines, and industrial drainage. Backed by our ISO9001, ISO14000, and OHSAS18001 certifications, this machine delivers consistent quality and operational efficiency, helping you meet global market demands.
The machine utilizes the proven Krah process, which winds HDPE profiles spirally and fuses them into a seamless pipe structure. The result is a lightweight yet exceptionally robust pipe with excellent hydraulic performance and long service life. Whether you need pipes for deep burial applications or large-diameter culverts, this machine provides a reliable solution with minimal maintenance requirements.
Key Features & Technical Specifications
- High Production Capacity: Achieve output speeds from 0.5 to 3 m/min, suitable for both small and large-scale projects.
- Wide Pipe Diameter Range: Produce pipes from 200 mm to 3000 mm in diameter, offering flexibility for various applications.
- Advanced PLC Control: Touch screen interface allows precise monitoring of temperature, pressure, and winding speed, ensuring repeatable quality.
- Energy-Efficient Design: Total power consumption between 150–350 kW, with optimized heating and drive systems to reduce electricity costs.
- Robust Construction: Main frame made of heavy-duty steel with corrosion-resistant coating, suitable for continuous operation in demanding environments.
- Water Cooling System: Ensures uniform cooling and dimensional stability of the pipe wall, reducing warpage and internal stresses.
- Customizable Voltage: Available in 380V/50Hz as standard, with other voltage options upon request for international markets.
| Parameter | Specification |
| Pipe Diameter Range | 200 – 3000 mm |
| Output Speed | 0.5 – 3 m/min |
| Total Installed Power | 150 – 350 kW |
| Cooling Method | Water cooling |
| Control System | PLC + Touch screen |
| Voltage (Standard) | 380V / 50Hz (others available) |
| Machine Weight (approx.) | 15 – 30 tons |
Advantages & Customer Benefits
- Corrosion & Chemical Resistance: HDPE material withstands acids, alkalis, and harsh soil conditions, extending pipe lifespan to 50+ years.
- Lightweight & Easy Handling: Compared to concrete or steel pipes, spiral wound HDPE pipes are lighter, reducing transportation and installation costs.
- Leak-Free Joints: The continuous spiral winding creates a monolithic structure; joints are fused or gasketed, minimizing leakage risk.
- High Ring Stiffness: Achievable SN2 to SN16, meeting international standards for underground drainage.
- Eco-Friendly Production: No volatile solvents; scrap material can be recycled back into the process, reducing waste.
- Low Maintenance: Smooth inner surface prevents debris buildup and reduces pumping energy over the pipe’s lifetime.
Why Choose Qingdao Yongke Machinery?
With an annual export value of US$1 million to US$1.5 million and a dedicated team of 51–100 employees, we have supplied our equipment to markets across North America, South America, Europe, Africa, Oceania, the Middle East, and Asia. Our factory in Qingdao, Shandong, China is fully equipped with modern machinery and quality control procedures. We hold ISO9001, ISO14000, and OHSAS18001 certifications, ensuring that every machine meets stringent quality, environmental, and occupational health standards. Our experienced engineers provide installation guidance and after-sales support, making your investment secure and profitable. Contact us today to discuss your specific diameter and production volume requirements – we are ready to deliver a tailored solution.
Frequently Asked Questions (FAQ)
-
What raw materials does this machine use?
It processes HDPE (High-Density Polyethylene) with typical melt flow index (MFI) suitable for extrusion winding. Recycled HDPE can also be used with proper formulation. -
What is the minimum pipe diameter the machine can produce?
The standard range starts at 200 mm, but we can design tooling for smaller diameters (e.g., 150 mm) upon request. -
How long does it take to change the pipe diameter?
Diameter change typically takes 2–4 hours, depending on the size difference and operator skill. Our modular tooling design simplifies the process. -
Does the machine require special foundation or civil works?
A flat concrete floor with basic anchoring is sufficient. We provide detailed foundation drawings and installation instructions. -
What is the power consumption per meter of pipe produced?
Energy consumption varies with pipe diameter and wall thickness; on average, it ranges from 0.8 to 2.5 kWh per meter for standard profiles. -
Can the machine produce pipes with different stiffness classes?
Yes, by adjusting the winding angle, profile wall thickness, or using additional reinforcing ribs, stiffness classes SN2 to SN16 are achievable. -
What after-sales support do you provide?
We offer online technical assistance, documentation, and optional on-site commissioning by our engineers. Spare parts are available for prompt delivery. -
Is the machine compliant with international safety standards?
Our machines are designed with safety guards, emergency stops, and CE-compliant electrical components (CE certification available upon request).
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