Ductile Iron Pipes: Standard Aligned With ISO 2531|C20-C100 Full Series For Global Markets - News - Jintaihongye Casting & Forging & Machinery

The new national standard will be implemented in 2027, driving comprehensive upgrades in industrial technology and quality while phasing out backward production capacity.

In line with international standard ISO 2531, product compatibility has been greatly enhanced.

The New National Standard GB/T 13295-2026

It will be officially implemented on March 1, 2027, bringing three major technical changes.

The grading system is adjusted. K-class pipes classified by wall thickness are phased out, and only C-class pipes rated by working pressure are retained. K-class pipes will gradually withdraw from the Chinese market.

For small-diameter pipes of DN300 and below, epoxy lining is for water supply pipes to elevate drinking water hygiene standards. For drainage pipes, this process is recommended but not compulsory.

The nominal diameter range is expanded from DN80-DN2600 to DN80-DN3000, making it better suited for large trunk pipeline projects.

Meet diverse demands and consolidate global competitive advantages.

For the international market, we will retain production capacity for K-class pipes and continue to manufacture K7, K8, K9, K10 and K12 series to meet diverse requirements of different countries and regions.

Meanwhile, as the new national standard aligns with ISO 2531, we are capable of manufacturing the full range of Class C pipes including C20, C25, C30, C40, C50, C64 and C100. As a professional ductile iron pipe manufacturer, we cater to both domestic and international markets.

It complies with the new domestic standards and supplies high-spec Class C pipes for global clients, further enhancing our competitiveness in the global market..