DN1800 internal epoxy and external 3PE expanded bell-and-spigot anti-corrosion steel pipe was put into use for the first time in Guizhou project

Recently, the first domestic "large-diameter DN1800 internal epoxy and external 3PE expanded bell-and-spigot anti-corrosion steel pipe" independently developed by Donghong Pipe Industry was successfully put into use in Guizhou project. This is the first industrial mass production and actual engineering application of such pipes in China. It not only fills the industry gap in the large-diameter bell-and-spigot anti-corrosion pipeline market, but also marks that my country has achieved a technological breakthrough in the field of large-diameter anti-corrosion pipeline manufacturing, and has set a new benchmark for the industry for "connection + protection" integrated solutions.

As the first industrial mass-produced product in China to realize the integrated design of "large-diameter expanded bell-and-spigot + 3PE anti-corrosion layer", this pipe solves the pain points of traditional pipelines with three core advantages:

Excellent anti-corrosion performance: the inner layer adopts innovative "high-toughness epoxy composite material", and the outer layer is matched with high-strength 3PE powder to form a coordinated protection system.

Convenient and efficient connection: the expanded bell-and-spigot design enables rapid docking and reduces the difficulty of construction.

Longevity throughout the entire life cycle: Dual optimization of materials and structures greatly improves the durability of pipelines.

In this application, the pipes were successfully docked at one time after arriving at the Guizhou project site. Its stable performance won high recognition from on-site personnel, verifying the reliability of this technical solution in actual projects.

Donghong Co., Ltd. has demonstrated its technological strength with differentiated innovation and filled the gap in the industry with practical results. This breakthrough is not only an important milestone in the technological innovation of China's pipeline manufacturing industry, but also provides more reliable solutions for urban renewal and municipal pipelines, injecting new momentum into the industry's technological upgrades.