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Qingdao Yongke Machinery Co., Ltd., established in 2010, is a professional manufacturer with a factory area of 10,000–30,000 square meters and a skilled team of 51–100 employees. We specialize in providing high-quality plastic pipe extrusion solutions. Our HDPE Krah Spiral Winding Corrugation Pipe Extrusion Machine for Large Diameter is designed to produce sturdy, durable, and cost-effective corrugated pipes with diameters ranging from 300 mm to 4000 mm. This advanced machine integrates the Krah spiral winding technology, ensuring excellent product consistency, high output, and low energy consumption. Whether for stormwater drainage, sewage systems, or industrial pipelines, this extrusion line delivers reliable performance that meets international standards.
The machine is engineered to process HDPE material efficiently, resulting in lightweight yet strong pipes that resist corrosion and abrasion. With an output capacity of up to 600 kg/h and a fully automated PLC control system, it minimizes manual intervention and maximizes productivity. Below we detail the key features, technical specifications, and benefits that make our Krah spiral winding machine a preferred choice for large-diameter pipe production.
Key Features and Advantages
- Krah Spiral Winding Technology: The pipe is formed by winding a continuous HDPE profile around a mandrel, then corrugating it for enhanced ring stiffness. This method ensures uniform wall thickness and excellent load-bearing capacity.
- Large Diameter Capability: Produces pipes from 300 mm up to 4000 mm in diameter, suitable for municipal water management, culverts, and large-scale drainage projects.
- High Output & Efficiency: Equipped with a powerful extruder (screw diameter 120 mm or 150 mm optional) and precise temperature control, the machine achieves a production rate of 200–600 kg/h, reducing per-unit costs.
- Energy-Saving Design: The drive system uses frequency inverters to optimize power consumption, and the heating zones are insulated to minimize heat loss. Total power ranges from 150 to 350 kW depending on configuration.
- Durable Construction: All contact parts are made of hardened stainless steel or chrome-plated materials for long service life. The machine frame is robust and vibration-resistant.
- User-Friendly PLC Control: The Siemens or equivalent PLC with a touch screen interface allows easy setting of parameters such as temperature, speed, and puller tension. Real-time monitoring and fault diagnostics reduce downtime.
- Flexible Customization: The line can be tailored for different pipe wall thicknesses, corrugation profiles, and colors (e.g., black, blue, green). Additional options include a belling machine, socket forming unit, and automatic stacking system.
- Compliance with International Standards: The machine is manufactured under ISO9001 quality management system, ISO14001 environmental management, and OHSAS18001 occupational health and safety standards. Pipes produced meet ASTM, EN, and GB/T requirements.
| Parameter | Value |
|---|---|
| Model | YK-KRAH-120 / YK-KRAH-150 |
| Screw Diameter | 120 mm / 150 mm |
| L/D Ratio | 33:1 |
| Pipe Diameter Range | 300 – 4000 mm |
| Wall Thickness | 5 – 60 mm (depending on pipe size) |
| Output Capacity | 200 – 600 kg/h |
| Total Installed Power | 150 – 350 kW |
| Cooling System | Water spray + air cooling |
| Control System | PLC (Siemens S7-1200) + 15" HMI |
Benefits for Your Business:
- Low Operating Cost: High automation reduces labor requirements; energy-efficient components lower electricity bills.
- Superior Pipe Quality: Corrugated structure provides high ring stiffness without adding weight, making transportation and installation easier.
- Fast Return on Investment: With a production capacity of over 400 kg/h and continuous operation, you can achieve high daily output. The machine is designed for 24/7 production with minimal maintenance.
- After-Sales Support: We provide installation guidance, operator training, and a one-year warranty. Our technical team is available for remote troubleshooting and spare parts supply.
At Qingdao Yongke Machinery, we have exported our plastic pipe machines to over 30 countries across North America, South America, Europe, Africa, Asia, and Oceania. Our annual export value exceeds US$1 million, reflecting the trust and satisfaction of global clients. Our factory is certified under ISO9001, ISO14001, and OHSAS18001, ensuring that every machine we deliver meets rigorous quality and safety standards. We also offer customization according to your specific pipe dimensions, material formulations, and output requirements.
Choosing our HDPE Krah spiral winding corrugated pipe extrusion machine means you invest in proven technology backed by years of engineering expertise. Contact us today for a detailed proposal and factory inspection invitation. Let us help you build a reliable large-diameter pipe production line that drives your business forward.
Frequently Asked Questions
-
Q: What raw materials can this machine process?
A: It is specially designed for HDPE (High Density Polyethylene). However, with minor adjustments, it can also process PP (polypropylene) or other thermoplastic materials. Please consult our engineers for specific adaptations. -
Q: What is the minimum and maximum pipe diameter I can produce?
A: The standard machine covers a diameter range from 300 mm to 4000 mm. For diameters below 300 mm, we recommend a different extrusion line. The maximum diameter can be extended upon request. -
Q: How long does it take to install and commission the machine?
A: Typically, installation and commissioning take 15–30 days, depending on site preparation and our technician's availability. We provide on-site guidance and training for your team. -
Q: What certifications do your machines have?
A: Our factory is ISO9001, ISO14001, and OHSAS18001 certified. The electrical components comply with CE standards (optional). We also provide test reports for pipe properties such as ring stiffness and impact resistance. -
Q: Can I produce pipes with different wall thicknesses and corrugation profiles?
A: Yes, the machine allows easy change of corrugation molds and adjustment of wall thickness by altering the screw speed and puller tension. We offer a range of mold sizes for various profiles. -
Q: What about after-sales service and spare parts?
A: We offer a 12-month warranty from commissioning date. Our warehouse stocks common spare parts (screws, heaters, belts), and we can ship them quickly. Remote technical support is available via video call or email. -
Q: What is the power supply requirement?
A: The standard voltage is 380V/50Hz three-phase, but we can adjust to 440V/60Hz or other voltages according to your local grid. Total power consumption depends on the configuration; typical range is 150–350 kW. -
Q: How do I get a quotation or visit your factory?
A: Please contact our sales team via email or phone. We welcome factory visits in Qingdao, Shandong, China. You can also request a video tour and sample pipe testing before placing an order.
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