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Welcome to Qingdao Yongke Machinery Co., Ltd. – a trusted manufacturer established in 2010 with a factory spanning 10,000-30,000 square meters and a dedicated team of 51-100 employees. Our HDPE Double Wall Corrugated Pipe Extrusion Line (DWC Pipe Making Machine) represents the pinnacle of engineering excellence, designed to produce high-quality corrugated pipes for drainage, sewage, cable protection, and industrial applications. With over a decade of experience and annual exports reaching US$1-1.5 million to markets across North America, Europe, Asia, Africa, and Oceania, we deliver reliability and performance that meets global standards.
This extrusion line integrates advanced technology to manufacture double-wall corrugated pipes with a smooth inner layer and a corrugated outer layer, offering superior strength, chemical resistance, and flexibility. The machine is fully automated with PLC control, ensuring consistent output and minimal waste. Whether you need pipes for stormwater management, telecommunications, or agricultural irrigation, our line delivers exceptional efficiency and cost-effectiveness.
Key Features & Technical Specifications
- High Output Capacity: Production speed up to 15 m/min, with a maximum output of 300-500 kg/h depending on pipe size.
- Energy-Efficient Extruders: Equipped with high-torque, low-noise extruders (e.g., SJ-120/33) with bimetallic screws for long service life.
- Precision Corrugators: Patented mold design with quick-change system for rapid diameter adjustments (ID 200-1200mm).
- Dual-Layer Co-extrusion: Separate extruders for inner and outer layers allow custom material combinations (e.g., virgin HDPE for inner, recycled HDPE for outer).
- Vacuum Calibration & Spray Cooling: Ensures precise wall thickness and smooth inner surface.
- Automatic Haul-Off & Cutter: Servo-driven cutter with programmable length control (accuracy ±2mm).
- User-Friendly HMI: Siemens PLC with touchscreen interface for real-time monitoring and parameter adjustment.
- Compliance with International Standards: Manufactured under ISO9001, ISO14001, and OHSAS18001 certified quality management systems.
| Parameter | Specification |
|---|---|
| Pipe Inner Diameter (ID) | 200 - 1200 mm (customizable) |
| Pipe Wall Thickness (Inner/Outer) | 0.5 - 5 mm (adjustable) |
| Extruder Configuration | Main extruder: SJ-120/33 (inner layer), Co-extruder: SJ-65/30 (outer layer) |
| Total Installed Power | Approx. 200 kW (varies with configuration) |
| Production Speed | 0.5 - 15 m/min |
| Cooling Method | Spray water cooling + vacuum sizing tank |
| Cutter | Servo-driven planetary cutter, length tolerance ±2mm |
| Control System | Siemens PLC + 10-inch color touch screen |
| Voltage & Frequency | 380V/50Hz, 3-phase (or as per client request) |
Advantages & Customer Benefits
- Cost-Effective Production: The dual-layer design allows using recycled HDPE for the outer corrugated layer without compromising performance, reducing raw material costs by up to 30%.
- Quick Mold Changeover: Tool-less mold locking system and optimized cooling ensure diameter changes in under 30 minutes, maximizing uptime.
- Superior Pipe Quality: Vacuum calibration ensures uniform wall thickness, while the corrugator design prevents deformation, resulting in pipes with high ring stiffness (SN4 to SN16).
- Low Maintenance: All wear parts (screw, barrel, molds) are made from hardened alloy steel and are easily replaceable. Centralized lubrication system reduces downtime.
- Global Compatibility: Electrical components comply with CE standards; voltage and frequency can be customized for your local market.
- Full After-Sales Support: We provide installation supervision, operator training, and remote technical support via video call.
Why Choose Qingdao Yongke Machinery?
Since 2010, we have been dedicated to manufacturing high-performance extrusion lines. Our factory, certified under ISO9001, ISO14001, and OHSAS18001, ensures every machine meets rigorous quality and environmental standards. With an annual export value of US$1-1.5 million and a team of 51-100 skilled professionals, we have supplied DWC pipe lines to over 30 countries, including sophisticated markets in North America, Europe, and Southeast Asia. Our machines are shipped from the port of Qingdao, with reliable logistics and on-time delivery.
We understand that investing in a production line is a strategic decision. That’s why we offer customized solutions – from pipe diameter range to automation level – to match your specific production needs. Our engineers provide free technical consultation and a detailed layout drawing for your factory. We also offer a one-year warranty on all components and lifelong spare parts supply.
Contact us today to discuss your project. Let us help you achieve efficient, high-quality DWC pipe production with a machine built to last. Request a quote or visit our factory in Qingdao, Shandong, China.
Frequently Asked Questions (FAQ)
1. What is the maximum pipe diameter your line can produce?
Our standard line covers inner diameters from 200mm to 1200mm. For larger diameters (up to 1600mm), we can customize the molds and corrugator upon request.
2. Can the line run both virgin and recycled HDPE material?
Yes. The dual-extruder design allows the inner layer to use virgin HDPE for smooth flow, while the outer corrugated layer can use up to 100% recycled HDPE (with proper quality). We recommend a blend ratio of 30-70% recycled for optimal performance.
3. How long does it take to change the mold for a different pipe diameter?
With our quick-change mold system, a trained operator can complete the changeover in under 30 minutes. The molds are designed with a standardized locking mechanism.
4. What is the power consumption per hour?
Typical power consumption is around 150-200 kWh at full load, depending on the pipe size and production speed. Energy-saving features like variable frequency drives (VFD) on extruders help reduce consumption.
5. Do you provide installation and training?
Absolutely. We offer on-site installation supervision and training for your operators (up to 2 weeks). We also provide detailed manuals and remote support via video call.
6. What certifications do your machines have?
Our manufacturing facility is ISO9001, ISO14001, and OHSAS18001 certified. The electrical components are CE-compliant, and we can provide additional certification (e.g., UL, CSA) based on your market requirements at an additional cost.
7. What is the warranty period?
We offer a standard 12-month warranty from the date of shipment, covering defects in materials and workmanship. Extended warranty options are available.
8. Can the line produce pipes with different ring stiffness grades?
Yes. By adjusting the corrugation depth and wall thickness (via mold and extruder settings), you can achieve ring stiffness grades from SN4 to SN16. Our technical team can help you optimize the parameters.
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