Ductile iron dragging pipe

Ductile Iron Dragging Pipe refers to pipes specifically manufactured from Ductile Iron (DI) material and designed for trenchless installation via pulling methods, particularly Horizontal Directional Drilling (HDD). These pipes inherit the superior properties of ductile iron (high strength, high toughness, corrosion resistance) while featuring structural design, joint configurations, and external protective coatings specifically optimized to withstand the demanding conditions encountered during pulling installation. This includes high axial tension, bending stresses, and friction against the surrounding ground.

Application Scenarios:

Ductile Iron Dragging Pipe is primarily used in complex scenarios requiring trenchless crossing installations. This includes crossings beneath rivers, lakes, highways, railways, densely built urban areas, ecological reserves, airport runways, and other locations where open-cut excavation is impractical or undesirable. It is especially suitable for new construction, expansion, and rehabilitation projects in municipal water supply networks involving long-distance, large-diameter crossings of obstacles, serving as an efficient and environmentally friendly alternative to traditional trenching or pipe jacking.

Key Advantage:

The core advantage of Ductile Iron Dragging Pipe lies in its exceptional tensile strength and superior toughness (ductility). The spheroidal graphite structure within ductile iron allows it to maintain the high strength of cast iron while possessing ductility approaching that of steel. This enables the pipe to withstand the powerful axial pulling forces and a certain degree of bending deformation during installation without brittle fracture. Furthermore, its outstanding corrosion resistance (especially when combined with a cement mortar lining and specialized external coatings like extruded polyethylene sleeves or tapes) ensures long service life in complex underground environments, significantly reducing maintenance costs and leakage risks.

Other Key Advantages:

Additional advantages of Ductile Iron Dragging Pipe include: reliable joint sealing integrity (typically using specialized mechanical joints, such as K-type or HDD-specific joints, ensuring leak-free performance during pulling and long-term operation), excellent hydraulic characteristics (smooth internal surface, cement mortar lining reduces head loss), long design service life (typically 50-100+ years), high lifecycle cost-effectiveness (while individual pipe cost may be higher than plastic pipes, its ultra-long lifespan, low maintenance needs, and installation efficiency make its total cost of ownership more competitive), and good adaptability to ground settlement and surface loads. Its purpose-designed external anti-corrosion coatings (like thick-walled extruded polyethylene sleeves) provide robust mechanical protection, effectively resisting abrasion and gouging during the pulling process through soil and rock.

     SHANDONG EPOCH EQUIPMENT CO., LTD. is a large-scale professional manufacturer in Shandong Province of China, adheres to the orientation of science and technology, environmental protection, quality and efficiency. At present, it has grown into a trans-regional and multi-industrial enterprise integrating such wide industries as design, development, production and export. Visit our website at https://www.epochpipeline.com/ to learn more about our products. For inquiries, you can reach us at sdepochwater@hotmail.com.