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Qingdao Yongke Machinery Co., Ltd., established in 2010, is a professional manufacturer specializing in HDPE pipe extrusion lines. Our factory covers 10,000–30,000 square meters, with an annual export value exceeding US$1 million. We are proud to present our HDPE Krah Pipe Spiral Corrugated Extrusion Line Manufacturing Equipment, designed for producing high-quality spiral corrugated pipes used in drainage, sewage, and water supply projects worldwide. This equipment combines advanced extrusion technology with energy-efficient components, ensuring reliable performance and cost-effective production.
Our Krah pipe extrusion line is engineered to meet the demanding requirements of modern infrastructure. With a robust structure, precise control system, and flexible customization options, it enables manufacturers to produce pipes with excellent ring stiffness and smooth inner walls. The line is fully compliant with international standards and is supported by our ISO9001, ISO14001, and OHSAS18001 certifications.
Key Features and Technical Advantages
- High-Efficiency Single Screw Extruder – Equipped with a barrier screw and bimetallic barrel, ensuring uniform melting and high output (up to 800 kg/h).
- Spiral Forming Unit – Precisely controlled rotating mandrel with automatic gap adjustment for consistent wall thickness and diameter.
- Multi-Zone Cooling System – Water spray cooling with temperature monitoring ensures even solidification and high crystallinity.
- PLC + HMI Control – Siemens or equivalent system with touchscreen interface, allowing real-time monitoring and parameter storage for different pipe sizes.
- Automatic Cutting & Collection – Synchronized traveling saw and conveyor with length measurement ensure accurate pipe lengths.
- Energy Saving Design – Inverter-driven motors and heat recovery system reduce power consumption by up to 15% compared to conventional lines.
- Quick Mold Change – Modular die head design enables fast diameter changeovers (within 30 minutes).
Technical Specifications (Typical Models)
| Parameter | YK-800 | YK-1200 |
|---|---|---|
| Pipe Diameter Range | 200–800 mm | 400–1200 mm |
| Extruder Screw Diameter | 90 mm | 120 mm |
| Max Output | 500 kg/h | 800 kg/h |
| Line Speed | 0.5–2.5 m/min | 0.5–3 m/min |
| Total Installed Power | 150 kW | 280 kW |
| Cooling Water Consumption | 12 m³/h | 20 m³/h |
Customer Benefits
- High Productivity – Continuous extrusion with minimal downtime, producing up to 8 meters of finished pipe per cycle.
- Superior Pipe Quality – Smooth inner bore and uniform corrugation ensure excellent hydraulic performance and structural strength.
- Low Maintenance – Heavy-duty components from reputable brands (e.g., Siemens, ABB, SKF) reduce wear and tear.
- Flexible Production – Easy switch between different diameters and lengths to meet diverse project requirements.
- Global Support – Our team provides installation, commissioning, and training services in over 20 countries.
As a manufacturer with over a decade of experience, Qingdao Yongke Machinery has delivered Krah pipe extrusion lines to markets across North America, Europe, Southeast Asia, Africa, and Oceania. Our factory’s annual export value of US$1–1.5 million reflects the trust our customers place in our equipment. We are committed to continuous improvement and strict quality control, backed by ISO9001, ISO14001, and OHSAS18001 certifications. Whether you need a standard line or a customized solution, our engineering team is ready to assist.
Contact us today to discuss your project requirements and request a competitive quotation. Let Yongke Machinery be your reliable partner in HDPE pipe production.
Frequently Asked Questions
Q1: What pipe diameters can this line produce?
A1: Our standard models cover diameters from 200 mm to 1200 mm. Customized ranges (e.g., up to 1600 mm) are available upon request.
Q2: Is the production line fully automatic?
A2: Yes, the line is equipped with a PLC and HMI system for automated start-up, production parameter adjustment, and fault diagnosis. Manual intervention is minimal.
Q3: What materials can be used besides HDPE?
A3: The line is primarily designed for HDPE. However, with minor modifications, it can process polypropylene (PP) or other thermoplastic materials. Please consult our engineers for details.
Q4: How long is the delivery time?
A4: Typical delivery is 45–60 days after receiving the down payment, depending on the model and customization level.
Q5: Do you provide installation and training?
A5: Yes, we offer on-site installation guidance, commissioning, and training for your operators. Remote support is also available.
Q6: What is the warranty period?
A6: We provide a one-year warranty for the entire line, covering defects in materials and workmanship. Extended warranty options are negotiable.
Q7: Can the line produce pipes with bell-and-spigot ends?
A7: Yes, an optional socket-forming unit can be integrated to produce pipe ends with integrated sockets for push-fit joints.
Q8: How energy-efficient is this equipment?
A8: Thanks to our inverter-driven motors and optimized screw design, the line saves up to 15% energy compared to conventional Krah pipe extrusion lines.
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