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Help CenterHDPE Krah Pipe Spiral Corrugated Pipe Extrusion Line Manufacturing Machine
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HDPE Spiral Corrugated Pipe Machine
The HDPE spiral corrugated pipes machine is capabale to produce the HDPE/PP structure wall spiral corrugated pipe and fittings from DN/ID300mm to DN/ID 4500mm. The HDPE spiral corrugated pipe is mainly for drainage, storm drain, marine pipe, sewer pipeline, rain water retention tank and chemical storage tanks as well as low-pressure applications like irrigation systems,etc.
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The advantage of Krah helical extrusion technology is that production is very flexible . One HDPE spiral corrugated pipe machine can produce the HDPE spiral corrugated pipe from DN300 to DN4500. Within shortime, one size can be changed to another size during production. Variety type of wall structure and ring stiffness pipe can be produced. The pipe connection can be Electrial fusion and rubber.
Pipe Wall Structure(PR, OP, CPR, SQ, VW, SP)
PR |
OP |
CPR |
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PR profile achieve high stiffness with low weight. This is the most common profile for sewer and water drainage applications. |
OP profile can achieve greater stiffness with a comparatively low weight for sewer and drainage application. |
One more Water way layer on top of CPR profile, can achieve higher stiffness and lower weight for sewer and drainage application. |
vw |
SQ1 |
SQ2-4 |
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Solid pipe with a smooth inner and outer surface. These pipes can be produced with a wall thickness of 5mm to 250mm for pressure pipe and storage tank. |
This profile option has a smooth inner and outer surface, including internal profile to one layer mainly for fittings, manhole, double wall tank, etc. |
Another one or several SQ1 profile layers ensure the very high ring stiffness for large diameter and special application. |
Connection method
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E-fusion
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Rubber
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Main feature of HDPE Spiral corrugated pipe machine:
• Pipe diameters: DN/ID 300 mm up to DN/ID 4500 mm
• Pipes length: 6 -9meters, with integrated socket and spigot.
• Material: HDPE, PP-HM, PP-B
• Output: 700-1500kg/h, according to EN13476 all stiffness classes upto SN16
• Application: Drainage pipe, Sewage pipe, Industrial pipes, Relining, Outfall pipes, Marine pipe, chemical tank
Core Product Features & Technical Advantages:
High-Efficiency Extrusion: The line features a precision-engineered extruder with a specially designed screw and barrel for optimal processing of HDPE raw materials. This ensures stable melt flow, excellent plasticization, and consistent pipe quality, minimizing material waste and energy consumption.
Advanced Spiral Corrugation Forming: At the heart of the line is our proprietary spiral corrugation forming unit. It utilizes a rotating mandrel and precision molds to create the distinctive Krah pipe profile with uniform wall thickness and high ring stiffness, which is crucial for withstanding external loads and soil pressure.
Intelligent Control System: Operation is streamlined through a centralized PLC control system with a user-friendly touch-screen HMI. This allows for precise control over all parameters—temperature, speed, pressure—ensuring repeatable production and simplifying troubleshooting. Key data can be logged for quality assurance.
Efficient Cooling & Calibration: A multi-stage vacuum water bath cooling tank is integrated to rapidly cool and calibrate the formed pipe. This process stabilizes the pipe dimensions, enhances the crystallinity of the HDPE, and improves the final product's mechanical properties and long-term shape retention.
Robust Pulling & Cutting: The line includes a heavy-duty caterpillar haul-off unit with a synchronized servo-driven cutting saw. This ensures straight, clean cuts to the desired length without deformation, ready for palletizing or further processing.
Tangible Benefits for Your Business:
Superior Product Quality: Produce pipes with excellent impact resistance, chemical corrosion resistance, and a long service life, meeting international standards for infrastructure applications.
Enhanced Production Capacity: Achieve a high and stable output rate, allowing you to fulfill large-scale project orders and grow your market share.
Operational Cost Savings: The energy-efficient design and high material yield reduce your per-unit production costs, improving your overall profitability.
Flexibility & Customization: The line can be configured to produce a wide range of diameters and wall thicknesses, giving you the versatility to cater to diverse market needs.
Reliable After-Sales Support: Backed by our experienced engineering team, we provide comprehensive installation guidance, operator training, and readily available spare parts support.
Our commitment to excellence is validated by our ISO9001, ISO14000, and OHSAS18001 certifications, which govern our entire manufacturing and management process. With a 10,000-30,000 square meter factory and a dedicated team of 51-100 professionals, we have the capacity and expertise to deliver this robust machinery. Our annual export value of US$1-1.5 Million to markets including North America, Europe, Southeast Asia, and Africa is a testament to the global trust in Yongke Machinery's quality. This extrusion line is not just a machine; it's a strategic investment in your factory's future, designed to deliver consistent returns through reliable, high-quality pipe production. Contact us today to discuss how we can tailor this solution to your specific requirements and help you build a more profitable and competitive business.
Frequently Asked Questions (FAQ):
Q: What is the main advantage of the spiral corrugated (Krah) pipe produced by this line?
A: The spiral structure provides high ring stiffness and strength-to-weight ratio, making it ideal for deep-burial applications, resistant to soil pressure and heavy loads, while being lightweight for easier handling and installation.Q: Can this line process recycled HDPE material?
A: Yes, the extruder and screw are designed to handle a certain percentage of high-quality recycled HDPE granules mixed with virgin material. The exact ratio depends on the desired final pipe properties and should be discussed during configuration.Q: What is the typical production output (meters per hour) for a standard diameter pipe?
A: Output is highly dependent on pipe diameter, wall thickness, and material grade. For example, for a DN/OD 500mm pipe, production speeds can range from 15 to 25 meters per hour. We provide detailed output estimates during the project quotation phase.Q: How is the pipe length controlled and cut?
A: The length is preset in the PLC. The caterpillar haul-off pulls the pipe, and a proximity sensor triggers the automatic traveling saw, which makes a clean, square cut at the precise length without stopping production.Q: What kind of training and support do you provide after machine delivery?
A: We offer comprehensive support including detailed installation manuals, on-site installation supervision by our engineers (optional), thorough operator and maintenance training, and a readily available inventory of critical spare parts.Q: Can the line be upgraded to produce double-wall corrugated pipes?
A: The basic line is optimized for single-wall spiral corrugated pipes. Producing double-wall pipes requires significant modifications, including an additional extruder and a different forming head. This is a major customization that can be explored as a separate project.Q: What are the main power requirements (voltage, phase) for this equipment?
A: The standard configuration is designed for 380V, 3-phase, 50Hz power supply, which is common in industrial settings globally. Specific power cabinet design can be adjusted to match local grid standards upon request.Q: How do you ensure the consistency of the pipe's corrugation profile and wall thickness?
A: Consistency is ensured by the precision of the forming molds, the stability of the extrusion process (controlled by PLC), and the effective vacuum calibration in the cooling tank. These systems work in unison to maintain tight tolerances.
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