At the beginning of 2026, the industry witnessed a milestone achievement. The world's first 2.8-meter diameter (DN2800) ultra-large diameter ductile iron pipe has been successfully applied in the Jiulongjiang Water Diversion Project in Zhangzhou, Fujian Province — a key national project under the "14th Five-Year Plan."
This brakthrough represents a leap from "following" to "leading," with significant advantages:
Dramatic Water Conveyance Capacity: Compared to the commonly used 1-meter diameter pipe, its water conveyance capacity has increased by nearly 20 times, making it ideal for long-distance, large-flow water diversion projects.
Efficient and Convenient Installation: On-site welding and secondary anti-corrosion treatment are not required, greatly improving installation efficiency and shortening the construction period.
Lower Overall Costs: Thanks to excellent corrosion resistance and sealing performance, it effectively reduces long-term operation and maintenance costs.
To date, phase two of the project has completed 60% of its investment, with nearly 70 kilometers of pipeline now connected.
The industry itself is also experiencing significant growth opportunities. Driven by national investment of over 5 trillion yuan in underground pipeline infrastructure during the "15th Five-Year Plan" period, the ductile iron pipe market is rapidly moving toward a hundred-billion-yuan scale.
Sustained Demand Growth: Current domestic annual demand has exceeded 2.8 million tons. Policies explicitly require that the application rate of ductile iron pipes in municipal water supply networks be increased to over 65%. In mega-cities like Beijing, Shanghai, Guangzhou, and Shenzhen, this share even reaches 80% in urban renewal projects.
Comprehensive Technology Upgrades: Key performance indicators of products from leading companies — such as service life (up to 35 years), water pressure resistance (exceeding national standards by 60%), and corrosion resistance (e.g., resistance to strong acid soils) — have fully surpassed industry standards.
Strong Growth Momentum: Institutions generally predict that the compound annual growth rate (CAGR) of net profits for industry leaders will exceed 60% between 2025 and 2027.
As a leading company in the industry, Xinxing Ductile Iron Pipes Co., Ltd. has also been making notable moves.
High-End Product Delivery: In February 2026, its Wu'an facility successfully delivered the first batch of high-strength, extra-long DN1200 C20 grade ductile iron pipes for a key livelihood project in Shanxi Province, demonstrating its technical capability to handle complex, customized orders.
Frequent Patent Achievements: At the end of 2025, Xinxing Ductile Iron Pipes obtained a new patent for a "corrosion-resistant ductile iron pipe," aiming to further enhance the corrosion resistance and service life of pipes through new material technologies.