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As a specialized manufacturer with over a decade of experience, Qingdao Yongke Machinery Co., Ltd. proudly presents our advanced HDPE Krah Pipe Production Line. Engineered for high-volume manufacturing of durable corrugated pipes essential for modern sewage and drainage infrastructure, this line embodies our commitment to robust engineering and operational efficiency. We understand the critical need for reliable, long-lasting piping solutions, and our production equipment is designed to deliver precisely that, helping our global partners build superior products and strengthen their market position.
This comprehensive extrusion line is the cornerstone for producing high-quality HDPE corrugated pipes, widely recognized for their excellent chemical resistance, high ring stiffness, and longevity. The Krah structure design provides exceptional load-bearing capacity, making these pipes ideal for demanding underground applications. Our production line integrates seamlessly to transform raw HDPE material into finished pipes with consistent wall thickness and precise corrugation profiles.
Key Features & Technical Advantages:
- High-Precision Extruder: Equipped with a specially designed screw and barrel for optimal HDPE plasticizing and melting, ensuring uniform material flow and superior pipe quality.
- Advanced Corrugation Unit: Features a modular mold design and precise vacuum calibration system to form the distinctive Krah profile with high dimensional accuracy and excellent surface finish.
- Intelligent Control System: A centralized PLC with a user-friendly touchscreen HMI allows for precise control over all process parameters, including temperatures, speeds, and vacuum levels, enabling repeatable production quality.
- Energy-Efficient Design: Incorporates advanced heating bands and optimized cooling systems to minimize energy consumption while maintaining stable production temperatures.
- Robust Haul-Off & Cutting: A synchronized servo-driven haul-off unit provides consistent pulling force, paired with an automatic traveling cutter for clean, square cuts at programmable lengths.
- Flexible Configuration: The line can be customized with optional components such as automatic stackers, printing systems, or socket fusion units to meet specific production needs.
Technical Specifications Overview:
| Parameter | Description / Options |
| Pipe Diameter Range | Typically from DN/ID 200mm up to DN/ID 2500mm (customizable) |
| Screw Diameter | Available in various sizes (e.g., 90mm, 120mm, 150mm) based on output |
| Drive Power | Configured according to extruder size and output requirements |
| Heating Zones | Multiple zones with digital PID temperature control |
| Cooling System | Water bath or spray cooling for efficient solidification |
| Control System | PLC (Siemens/Allen-Bradley optional) with color touch screen |
| Production Speed | Dependent on pipe size and wall thickness |
Benefits for Your Business:
- High Output & Low Operational Cost: Achieve significant production volumes with optimized energy use, reducing cost per meter of pipe produced.
- Consistent Product Quality: Automated controls ensure every pipe meets stringent standards for dimensions, stiffness, and appearance, enhancing your brand reputation.
- Operational Simplicity & Safety: The intuitive interface reduces training time, while integrated safety features protect your personnel and equipment.
- Durability & Low Maintenance: Built with high-grade components and a robust frame, the line offers long service life with minimal downtime for maintenance.
- Market Adaptability: Produce a range of pipe sizes and classes (e.g., SN4, SN8, SN16) to cater to diverse project requirements and expand your customer base.
Backed by our ISO9001, ISO14000, and OHSAS18001 certified manufacturing processes and over 10,000 square meters of factory space, Qingdao Yongke Machinery guarantees professional equipment built to last. With an annual export value exceeding one million US dollars and a presence in markets across North America, Europe, Southeast Asia, and beyond, we have proven our capability to support global clients. Our dedicated team of 51-100 professionals ensures comprehensive service from consultation to after-sales support. Choose our HDPE Krah Pipe Production Line to equip your factory with reliable, high-performance technology that drives productivity and profitability. Contact us today to discuss your specific requirements and receive a tailored solution.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between a Krah pipe and a standard corrugated pipe?
A: The Krah structure is a specific corrugation profile known for its high ring stiffness and optimal material distribution. It typically features a double-wall construction with a smooth inner liner and a corrugated outer wall, offering superior mechanical performance compared to some single-wall corrugated designs, making it highly suitable for deep-burial sewage applications.
Q2: Can this production line process recycled HDPE material?
A: Yes, the line can be configured to handle a certain percentage of high-quality recycled HDPE granules alongside virgin material. The exact ratio depends on the desired final pipe properties and relevant standards. We recommend discussing your raw material plans during the consultation phase.
Q3: What is the typical lead time for delivering and installing such a production line?
A: The lead time varies based on the specific configuration and customization level. Generally, for a standard model, delivery can be expected within 3-4 months after order confirmation. Installation and commissioning are typically completed by our technical team within a few weeks, depending on site readiness.
Q4: Do you provide training for our operators?
A: Absolutely. Comprehensive training for your operators and maintenance staff is a standard part of our service. Training covers machine operation, routine maintenance, basic troubleshooting, and safety procedures, both at our factory during FAT (Factory Acceptance Test) and at your site during commissioning.
Q5: What kind of after-sales support and warranty do you offer?
A: We provide a standard warranty for critical components, with detailed terms provided in the contract. Our after-sales support includes remote technical assistance via phone/email, readily available spare parts supply, and the option for periodic maintenance visits by our engineers. Support is accessible through our office in Qingdao and our network of agents in key markets.
Q6: How do we determine the appropriate production line model for our target pipe specifications?
A: The selection depends primarily on your target pipe diameter range, desired output (kg/hour or meters/day), and the specific stiffness class (SN rating). We will guide you through a detailed technical questionnaire to recommend the optimal extruder size, corrugator modules, and auxiliary equipment for your needs.
Q7: Is the control system easy to understand for operators with basic experience?
A: Yes, the PLC-based control system is designed with operator-friendliness in mind. The touchscreen interface uses clear graphics, intuitive menus, and can often be set to multiple languages. Alarms and help guides are integrated to assist operators in managing the process effectively.
Q8: Can the line be upgraded in the future to produce different pipe profiles or larger diameters?
A: The modular design of key components, especially the corrugation unit, allows for certain future upgrades. While expanding to a significantly larger diameter range might require major changes, upgrading molds within a range or adding options (like printing) is usually feasible. Discuss your long-term plans with our engineers during the initial design phase.
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