Segmentation by type distinguishes five ductile‑iron pipe configurations that address varying seismic performance criteria. Standard ductile‑iron pipe, the baseline offering, serves 45 % of installations, providing adequate toughness for low‑to‑moderate seismic zones at competitive cost. High‑strength ductile‑iron pipe, engineered with enhanced alloying and heat treatment, captures 25 % of the market, delivering superior yield strength for high‑risk areas where pipe deformation must be minimized. Flexible ductile‑iron pipe, incorporating engineered joints and bendable sections, accounts for 15 % and is favored in retrofit projects where alignment constraints exist. Coated ductile‑iron pipe, featuring internal corrosion‑resistant linings, holds 10 % of demand, especially in chemically aggressive environments that also require seismic resilience. Composite‑lined ductile‑iron pipe, a hybrid solution merging polymeric liners with iron walls, occupies the remaining 5 %, targeting niche applications demanding both leak‑proof performance and high seismic endurance. The distribution of these types reflects the trade‑off between cost, mechanical robustness, and specific project requirements, directly influencing the market’s aggregate valuation.