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Help CenterHigh Output HDPE Krah Spiral Corrugated Pipe Making Machine for Water Supply and Drainage
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Welcome to Qingdao Yongke Machinery Co., Ltd. – your reliable partner in advanced plastic pipe production solutions. Since our establishment in 2010, we have been dedicated to manufacturing high-efficiency extrusion lines. Our High Output HDPE Krah Spiral Corrugated Pipe Making Machine is engineered for water supply and drainage applications, combining German-inspired Krah technology with robust Chinese manufacturing to deliver pipes with superior ring stiffness, corrosion resistance, and long service life. With a factory covering 10,000–30,000 square meters and a skilled team of 51–100 employees, we ensure every machine meets stringent quality standards.
This Krah spiral corrugated pipe production line is designed for high-volume, continuous operation, producing pipes from 200mm up to 3000mm in diameter. The unique spiral winding and melt-bonding process creates a smooth inner wall and a corrugated outer wall, providing excellent hydraulic performance and structural integrity. Ideal for municipal water supply, stormwater drainage, sewage systems, and industrial piping, this machine delivers consistent output with minimal waste.
Below we outline the key features, technical specifications, and benefits that make our machine a top choice for pipe manufacturers worldwide.
Key Features & Advantages
- High Output Efficiency – Continuous extrusion capacity up to 600 kg/h (depending on screw configuration), reducing production cycles and increasing profitability.
- Krah Spiral Technology – The pipe is formed by spirally winding a profiled strip, which is thermally fused to create a monolithic structure with exceptional ring stiffness (SN2–SN16).
- Durable HDPE Material – Fully compatible with recycled or virgin HDPE, offering excellent chemical resistance, UV stability, and impact strength.
- Precision Control – Equipped with Siemens PLC and HMI touch screen for real‑time monitoring of temperature, pressure, speed, and wall thickness.
- Low Energy Consumption – Energy‑efficient servo‑driven motors and optimized screw design reduce electricity usage by up to 15% compared to conventional machines.
- Quick Die Change System – Interchangeable die heads allow fast diameter changeovers (within 2 hours), minimizing downtime.
- Integrated Quality Monitoring – Optional online thickness gauge and flaw detection system ensure pipes meet EN 13476 or ASTM F2764 standards.
- User‑Friendly Maintenance – Modular design with easy access to all key components; spare parts are readily available locally.
Technical Specifications (Standard Configuration)
| Parameter | Value |
| Pipe Outer Diameter Range | 200 – 3000 mm |
| Wall Thickness Range | 8 – 60 mm |
| Production Speed | 0.5 – 5 m/min (depending on diameter) |
| Main Extruder Screw Diameter | 120 mm / 150 mm / 180 mm (optional) |
| Extrusion Capacity | 300 – 600 kg/h |
| Installed Power | 100 – 250 kW |
| Cooling Water Consumption | 10 – 20 m³/h |
| Machine Dimensions (L×W×H) | 35 × 8 × 6 m (approx.) |
| Control System | Siemens S7‑1200 PLC + 10" HMI |
Specifications above are for reference; final configuration can be customized to match your raw materials and production requirements. Please contact our sales team for a detailed quotation.
Why Choose Our HDPE Krah Pipe Machine?
- Proven Track Record – Over 10 years of manufacturing experience, with machines exported to 20+ countries including North America, Europe, Southeast Asia, Africa, and the Middle East.
- Comprehensive After‑Sales Service – We provide 2‑year warranty on main components, free training for your operators, and remote technical support via video call.
- Higher Profitability – The high output and low scrap rate (below 2%) ensure a fast ROI. Our customers typically recover their investment within 12–18 months.
- Eco‑Friendly Production – The machine meets ISO14000 environmental management standards and can process up to 30% recycled material without compromising pipe quality.
- Flexible Customization – We offer options for double‑wall corrugated, smooth inner wall, or full corrugated pipes, as well as integrated printing, belling, or chamfering units.
Our company, Qingdao Yongke Machinery Co., Ltd., holds ISO9001:2015, ISO14001:2015, and OHSAS18001 certifications, reflecting our commitment to quality, environmental responsibility, and occupational health. With an annual export value exceeding US$1 million and a strong presence in global markets, we have earned the trust of pipe manufacturers worldwide.
We invite you to partner with us. Whether you need a complete turnkey production line or a customized machine upgrade, our engineers will work with you to design the most cost‑effective solution. Contact us today for a free consultation and machine sample testing.
Frequently Asked Questions (FAQ)
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Q: What is the maximum output per hour?
A: Depending on the screw size and pipe diameter, the output ranges from 300 kg/h to 600 kg/h. For diameters above 2000mm, the output may be lower due to cooling time requirements. We can propose a twin‑extruder configuration for higher throughput. -
Q: Can the machine produce pipes with both smooth inner wall and corrugated outer wall?
A: Yes, the standard Krah design naturally creates a smooth inner surface for low friction loss and a corrugated outer wall for high ring stiffness. This is ideal for drainage and water supply. -
Q: What raw materials are compatible?
A: The line is designed primarily for HDPE (PE80/PE100). It can also process PP or recycled HDPE blends after minor adjustments. Please send a sample of your material for evaluation. -
Q: How long does it take to change the pipe diameter?
A: With the quick‑change die system, a skilled team can switch diameter in approximately 1.5 – 2 hours. The complete changeover including cooling and calibration adjustment may take up to 4 hours. -
Q: Do you provide installation and training?
A: Yes, we offer on‑site installation supervision and commissioning (travel expenses covered by buyer). We also provide free training for up to 5 operators for 7 days at our factory or online. -
Q: What certifications does the machine have?
A: Our machines are manufactured under ISO9001 and ISO14001 certified quality management systems. The machine can produce pipes that comply with EN 13476, ASTM F2764, or ISO 21138 standards. Specific certification of the final pipe is the buyer's responsibility. -
Q: What is the warranty period and after‑sales support?
A: We provide a 2-year warranty on the main extruder screw, barrel, and gearbox. Other electrical components have a 1‑year warranty. We offer 24/7 remote technical support and a stock of common spare parts at our warehouse in Qingdao. -
Q: Can you customize the machine for very large diameters like 3500mm?
A: Yes, we have designed lines for diameters up to 4000 mm for special projects. We will need to adjust the cooling tank, winding unit, and supporting system. Contact our sales team with your requirements.
* All above information is based on typical configurations. Actual specifications may vary. Please consult our engineers for a tailored solution.
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