First domestic DN2600 Xinxing Anchor ductile iron sewage pipe rolls off production line

According to Xinxing Cathay International Group Co., Ltd, published on 13 November 2026, the first domestic DN2600 sewage pipe with the proprietary Xinxing Anchor joint completed trial manufacture and rolled off the production line in a single successful run. The pipe is produced at the Wu’an manufacturing base of Xinxing Ductile Iron Pipes under Xinxing Cathay International Group, filling a domestic technical gap for large‑bore ductile iron pipes lined with aluminate cement.

The pipe measures eight metres in length and carries a DN2600 nominal diameter, the largest specification for aluminate‑lined ductile iron pipes within the country. Its inner lining uses high‑alumina cement resistant to acid, alkali and abrasion, while an epoxy anti‑corrosion coating covers the outer surface. The joint adopts the self‑anchoring Xinxing Anchor design developed in‑house. The extended single length reduces the total number of joints along a pipeline, lowers leakage risks and speeds up site installation for long‑distance conveyance routes.

Production teams at the Wu’an facility refined process parameters and tightened process controls to resolve distortion triggered by the pipe’s own weight, securing tight dimensional tolerances. The self‑anchoring joint resists tensile pull‑out and suits pipe jacking, steep gradients and seismic zones. The outer epoxy layer delivers extra corrosion resistance. The combined design improves safety and durability under complex geology and heavily corrosive environments, for use across regions with difficult ground conditions.

Urban underground pipeline networks form essential municipal infrastructure. The new pipe’s extended service life, high reliability and strong corrosion resistance lengthen operational cycles and cut later maintenance work, supporting the construction of green municipal underground networks.