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Help CenterHDPE Hollow Wall Spiral Krah Pipe Extrusion Line for Drainage and Water Supply
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Qingdao Yongke Machinery Co., Ltd., established in 2010 with a manufacturing facility spanning 10,000–30,000 square meters, is a professional manufacturer specializing in plastic pipe extrusion lines. Our HDPE Hollow Wall Spiral Krah Pipe Extrusion Line is engineered to produce high-quality spiral wound pipes used in drainage and water supply systems. This line combines advanced extrusion technology with robust automation, delivering consistent performance and excellent pipe properties such as high ring stiffness, light weight, and corrosion resistance. Designed for cost-effective production, it is the ideal solution for both municipal and industrial projects. Backed by our ISO9001, ISO14001, and OHSAS18001 certified production system, we ensure every line meets international standards.
Key Features & Technical Specifications
Our HDPE Hollow Wall Spiral Krah Pipe Extrusion Line integrates multiple processing stations into a streamlined system, from raw material feeding to automatic cutting and stacking. The spiral winding process creates a hollow-wall structure that significantly reduces material usage while maintaining high mechanical strength. Below are the core features and benefits:
- High Efficiency Extruder: Equipped with a specially designed screw and barrel for HDPE, ensuring excellent plasticizing and stable output up to 800 kg/h.
- Spiral Winding Head: Precision-machined rotating mandrel with adjustable gap control for consistent wall thickness and diameter tolerance.
- Vacuum Calibration Tank: Ensures accurate pipe dimensions and smooth inner/outer surfaces.
- Programmable Logic Controller (PLC): Touch-screen HMI enables one-person operation, real-time parameter monitoring, and fault diagnosis.
- Automatic Cutting & Belling: Integrated sawing unit with dust collection system and socket forming device for easy jointing.
- Energy Saving Design: Insulated barrel and servo-driven haul-off reduce power consumption by up to 20% compared to conventional lines.
- Versatile Application: Suitable for both drainage and water supply pipes, with ring stiffness classes up to SN16.
- Compact Layout: Modular design saves floor space and simplifies maintenance.
Typical Technical Parameters
| Parameter | Specification |
|---|---|
| Pipe Material | HDPE (PE80/PE100) |
| Pipe Outer Diameter | 200 – 1200 mm (customizable up to 2000 mm) |
| Wall Structure | Hollow wall spiral (Krah type) |
| Output Capacity | 400 – 800 kg/h |
| Line Speed | 0.5 – 5 m/min |
| Installed Power | 80 – 200 kW (according to model) |
| Voltage | 380V/50Hz (3-phase), other voltages available upon request |
| Automation | PLC + color touch screen, remote monitoring optional |
Customer Benefits
- Significant material cost reduction – hollow wall design saves up to 30% raw material compared to solid wall pipes of equal stiffness.
- Excellent hydraulic performance – smooth inner bore minimizes friction loss, ideal for water supply and drainage.
- High ring stiffness – spiral profile provides superior resistance to external loads, suitable for deep burial applications.
- Low maintenance – corrosion-resistant HDPE ensures long service life (minimum 50 years).
- Quick installation – flexible pipe can be produced in long lengths, reducing joints and installation time.
- Eco-friendly – 100% recyclable material; production process generates less waste.
Trust & Reliability
Qingdao Yongke Machinery Co., Ltd. has been serving the plastic extrusion industry since 2010. We export to over 15 markets worldwide, including North America, South America, Eastern Europe, Africa, and Oceania, with an annual export value of US$1–1.5 million. Our dedicated team of 51–100 employees includes experienced engineers and technicians who ensure every machine passes strict quality control. We are ISO9001, ISO14001, and OHSAS18001 certified, demonstrating our commitment to quality, environment, and occupational health. Every extrusion line is tested before shipment, and we provide on-site installation guidance and commissioning support. Choose Yongke Machinery for reliable performance, competitive pricing, and responsive after-sales service.
Frequently Asked Questions
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Q: What raw materials can be used with this line?
A: The line is designed for HDPE (PE80/PE100) in both virgin and recycled forms. We recommend using virgin material for water supply pipes to meet hygiene standards. Recycled material can be used for drainage pipes when properly processed. -
Q: What is the typical pipe length produced?
A: Standard lengths range from 6 to 12 meters, but the line can be customized to produce other lengths based on your requirements and haul-off capacity. -
Q: Does the line include a socket (belling) unit?
A: Yes, an automatic belling device is integrated into the line to form spigot and socket ends for easy jointing. The bell depth is adjustable. -
Q: What is the warranty period?
A: We offer a 12-month warranty from the date of shipment or 18 months from the date of installation, whichever comes first. Extended warranty packages are available upon request. -
Q: Can I produce pipes for both drainage and water supply on the same line?
A: Yes, the line is versatile. By adjusting the spiral head gap and cooling parameters, you can produce pipes with different wall thicknesses and stiffness classes required for either application. -
Q: How long does installation and commissioning take?
A: Typically 7–10 working days for complete installation and commissioning. Our engineer can be dispatched to your site to provide training and support. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is one set of the extrusion line. We can also supply spare parts and auxiliary equipment separately. -
Q: Do you provide technical drawings and operation manuals?
A: Yes, we provide detailed layout drawings, electrical diagrams, and an operation manual. Remote online support is also available during the entire life of the machine.
Ready to enhance your production? Contact Qingdao Yongke Machinery Co., Ltd. today for a detailed quotation and technical proposal. Our team is ready to support your project from design to production.
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