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Qingdao Yongke Machinery Co., Ltd., established in 2010, is a professional manufacturer of plastic pipe extrusion lines. With a factory area spanning 10,000–30,000 square meters and a dedicated team of 51–100 employees, we have been delivering reliable machinery to global markets including North America, Europe, Southeast Asia, Africa, and Oceania. Our Double Wall Corrugated HDPE Krah Pipe Production Line is designed specifically for underground drainage applications, offering robust performance, high efficiency, and long service life. This line produces pipes with excellent ring stiffness and hydraulic characteristics, meeting the demanding requirements of modern infrastructure projects.
The production line integrates advanced extrusion technology, precise corrugation molds, and automated control systems to ensure consistent pipe quality. Below we detail the key features, technical specifications, and benefits that make this line a preferred choice for manufacturers worldwide.
Key Features & Technical Specifications
- High-performance extruder: Equipped with a HDPE-optimized screw and barrel designed for high output (up to 600 kg/h) and excellent melt homogeneity.
- Precision corrugation unit: Customizable molds for pipe outer diameters from 200 mm to 3000 mm, producing double-wall corrugated profile with smooth inner surface.
- Advanced vacuum calibration & cooling: Multi-stage water spray cooling ensures uniform cooling and minimal shrinkage, enhancing dimensional stability.
- Full PLC control: Siemens automation system with touch screen interface for easy operation, monitoring, and adjustment of parameters such as temperature, speed, and pressure.
- Flexible die head: Quick-change adapter for different pipe sizes, reducing downtime and increasing production flexibility.
- Energy-efficient design: Optimized heating zones and insulated barrels reduce power consumption while maintaining consistent processing temperatures.
- Robust downstream equipment: Includes automatic cutting saw, pipe belling unit, and stacking conveyors for complete production automation.
| Parameter | Specification |
|---|---|
| Pipe outer diameter | 200–3000 mm |
| Wall structure | Double wall corrugated (smooth inner, corrugated outer) |
| Material | HDPE (PE80, PE100) or PP (upon request) |
| Production capacity | 100–600 kg/h (depending on pipe size) |
| Line speed | 0.5–5 m/min |
| Ring stiffness class | SN4, SN8, SN12 (per EN 13476) |
| Pipe length | 1 m, 2 m, 6 m (customizable) |
| Control system | Siemens PLC with touch screen (other brands optional) |
| Power consumption | ~150–300 kW (installed) |
| Applicable standards | EN 13476, ASTM F2648, GB/T 19472.1 |
Benefits for Customers
- High output & low production cost: The optimized screw design and efficient cooling system allow for continuous operation at high speeds, reducing per-meter pipe cost.
- Excellent pipe quality: Double-wall corrugated structure provides high ring stiffness while minimizing weight. Smooth inner wall ensures low friction for fluid transport.
- Durability for underground use: HDPE material offers superior resistance to chemicals, abrasion, and environmental stress cracking, ensuring a service life of over 50 years.
- Easy maintenance: Modular components and accessible heating zones simplify routine cleaning and part replacement.
- Flexibility: Quick mold changeover allows production of multiple diameters on the same line, minimizing downtime between orders.
- Compliance with international standards: Pipes produced meet EN 13476, ASTM F2648, and other relevant standards for underground drainage and sewer systems.
Trusted Manufacturer with Proven Track Record
Qingdao Yongke Machinery Co., Ltd. has been serving the global pipe industry since 2010. With an annual export value of US$1–1.5 million, we have delivered lines to over 20 countries across North America, South America, Europe, Asia, Africa, and Oceania. Our factory holds ISO9001, ISO14000, and OHSAS18001 certifications, reflecting our commitment to quality, environmental management, and occupational health. We offer comprehensive after-sales support including installation guidance, operator training, and spare parts supply. Our dedicated team of engineers is available for remote and on-site technical assistance to ensure your production runs smoothly.
Choosing the right production line is critical for your business profitability. Our Double Wall Corrugated HDPE Krah Pipe Production Line combines advanced German-inspired technology with our own manufacturing expertise, delivering a solution that balances performance, cost, and reliability. Contact us today for a quote or technical consultation – we are ready to tailor a line to your specific diameter range, output requirements, and budget.
Frequently Asked Questions (FAQ)
-
Q: What raw materials does this line process?
A: The line is designed primarily for HDPE (PE80 and PE100). It can also process PP (polypropylene) with minor adjustments. We recommend using virgin or high-quality recycled HDPE for consistent pipe quality. -
Q: What is the typical pipe diameter range?
A: The standard range is from 200 mm to 3000 mm outer diameter. Custom molds for special sizes are available upon request. -
Q: What ring stiffness classes can be achieved?
A: Depending on the pipe design, our line can produce pipes with stiffness classes SN4, SN8, and SN12, compliant with EN 13476. Higher stiffness classes (e.g., SN16) are possible with optimized die and corrugation parameters. -
Q: How long is the warranty period?
A: We offer a standard 12-month warranty from the date of commissioning. Extended warranty options are negotiable. -
Q: Do you provide installation and training?
A: Yes. Our service team can supervise installation on site and provide comprehensive training for your operators. Remote support is also available via video call. -
Q: Can the line produce pipes with different lengths?
A: Absolutely. The cutting saw can be set to cut pipes at lengths from 1 meter up to 6 meters or more, according to your market needs. Automated belling and socket forming options are also available. -
Q: What is the power requirement?
A: Typical installed power is around 150–300 kW, depending on the extruder size and configuration. Voltage can be customized (e.g., 380V/50Hz, 440V/60Hz) to match your local grid. -
Q: How do I get a spare parts list or manual?
A: Upon purchase, we provide a complete set of technical documentation including operation manual, maintenance schedule, and spare parts list. We also keep common spare parts in stock for fast delivery.
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