Home - News - Industry News - High-Pressure Epoxy-Coated Flange Spigot: Reliable Solution for Underground Pipeline Projects
May 21, 2026
With the continuous expansion of urban municipal infrastructure and underground pipeline construction, higher requirements are put forward for the pressure resistance, corrosion resistance, and service life of pipeline fittings. As a key connecting component for buried water supply and drainage networks, a qualified flange spigot directly determines the safety and stability of the whole pipeline system. Our high-pressure epoxy-coated flange spigot has become a trusted choice for underground water supply and sewage pipeline projects, offering excellent performance and strict quality control.
This flange spigot is made from high-quality ductile iron and is specifically designed to handle high-pressure conditions, conforming to PN10, PN16, and other common pressure grade standards. The product undergoes precision casting and rigorous heat treatment, resulting in high structural strength and impact resistance. It effectively withstands the impact of water pressure and ground settling in long-term buried conditions. Unlike standard pipeline fittings, this high-pressure flange spigot features an optimized wall-thickness design, ensuring stable performance even in harsh underground environments.
Corrosion is the biggest hidden danger of underground pipeline fittings. Our high‑pressure flange spigot is treated with uniform blue epoxy coating on its inner and outer surfaces. This protective layer can effectively isolate underground humid soil, rainwater, and sewage erosion, avoiding rust and aging caused by long‑term underground burial. Compared with traditional uncoated fittings, the epoxy‑coated flange spigot greatly improves corrosion resistance and extends service life, reducing later‑stage maintenance and replacement costs for municipal engineering projects.
The flange-spigot dual-end structure provides a stable connection between flanged pipes and socket pipes. It is designed for easy installation, ensures a tight seal, and is highly adaptable to pipeline settlement and minor displacements. Our high-pressure epoxy-coated flange spigot strictly adheres to EN545 international standards and is widely used in municipal water supply, wastewater treatment, firefighting pipelines, and various underground engineering projects. It aligns with global engineering standards, facilitating overseas municipal infrastructure construction and offering reliable pipeline connection solutions for international partners.
Adhering to the concept of quality‑oriented manufacturing, we strictly control every production process from raw material selection to surface treatment. Our high-pressure, epoxy-coated flange spigot has been recognized by both domestic and international customers for its consistent performance and extended service life. In the future, we will keep optimizing pipeline fitting products, continuously upgrading the design and performance of the flange spigot series, to provide more reliable supporting solutions for urban underground infrastructure construction worldwide.
