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MD4500
EAGLE
DN4500
Drawing upon more than 12 years’experience to supply winding tooling—mandrel to produce krah pipeS, we specialize in engineering industrial-grade core components for complex profiled wall structures. As a direct source facility, we bridge the gap between uncompromising dimensional precision and long-term cost-efficiency. Our winding mandrels are meticulously crafted to ensure exceptionally smooth demolding and a remarkably flat inner pipe surface, which is a critical factor for optimizing fluid dynamics in municipal and industrial drainage applications. When you run your hand along the finished steel surface of our tooling, you can feel the precise machining that actively minimizes friction during the heated extrusion process. We have engineered these mandrels to integrate precisely with major global production lines. Our mandrel can work with Krah machine, Bauku machine and Maintool machine, providing an exact, secure fit. We can manufacture the mandrel , diameter from OD200 to OD5000mm, length from 3 meters to 10meters, giving you the ultimate flexibility to scale your pipe production capabilities according to specific project demands without requiring extensive machine modifications.
Diameter: OD200mm to OD5000mm. The ability to produce pipes across such a vast diameter spectrum is essential for meeting modern infrastructure demands. From smaller OD200mm conduits utilized in local residential drainage networks to massive OD5000mm structured wall pipes designed for major municipal storm water management and underground culverts, our winding tooling delivers strict dimensional stability. Each mandrel is subjected to rigorous laser-measured dimensional checks before leaving our facility. This ensures that the resulting pipe maintains exact tolerances, preventing any ovality or deformation issues during the critical water-cooling phase of production.
Length: 3meter to 10meters. Depending on your specific factory layout, extrusion capacity, and transportation constraints, we offer custom mandrel lengths tailored to your daily operational workflow. A longer 10-meter mandrel allows for fewer connection joints in extensive pipeline installations, which significantly reduces on-site welding time and minimizes potential leak points for the end-user. Conversely, a compact 3-meter option is highly practical for creating specialized pipe fittings or for production facilities with limited floor space. The internal structural integrity of our tooling ensures that even at maximum lengths, there is zero sagging or deflection during the heavy, continuous plastic winding process.
Material: Q355B. The core foundation of our winding tooling is forged entirely from Q355B structural steel. This specific grade of steel is deliberately selected for its exceptional yield strength and outstanding resistance to thermal fatigue. During the continuous extrusion of hot HDPE or PP materials, the mandrel is constantly exposed to intense thermal cycling. The Q355B steel maintains its rigid cylindrical geometry without warping, ensuring a remarkably long operational lifespan even under continuous daily production schedules. Furthermore, the optimized internal core structure of the mandrel promotes rapid and even heat dissipation. This thermal efficiency directly contributes to a faster cooling cycle for the extruded pipe, thereby increasing your overall daily production output and reducing energy consumption.
Application: for krah pipe, HDPE spiral wound pipe, HDPE winding pipe, HDPE spiral wound tank, marine structured wall pipe. Our precision-engineered mandrels serve as the critical foundation for a wide array of heavy-duty fluid handling solutions. By utilizing our tooling, manufacturers can confidently produce rigid Krah pipes used in deep underground sewage systems. Beyond standard piping, this tooling is equally adept at forming large-capacity HDPE spiral wound tanks for industrial chemical storage, where inner wall smoothness is non-negotiable to prevent hazardous residue buildup. Additionally, the mandrels are perfectly suited for fabricating marine structured wall pipes, which require exceptional resistance to external pressure and harsh saltwater environments. The versatility of this tooling empowers your facility to diversify its product offerings and enter new, lucrative infrastructure markets with confidence.
To guarantee consistent performance and reliability, our winding tooling production is strictly governed by ISO9001 quality management systems and comprehensive CE certification standards. Every single mandrel undergoes a meticulous fabrication process, from the initial raw steel selection and structural welding to the final surface polishing and balancing. We implement optimized core structural designs that not only enhance the ring stiffness of the final pipe but also significantly improve your overall production efficiency.
