UNSPSC 31121223: Ductile iron sand machined casting assembly

Assembly of ductile iron objects cast from sand molds

UNSPSC 31121223 Ductile iron sand machined casting assembly (Commodity) encompasses ductile iron pipe, fittings, spools, and related water-utility components that state and local water departments procure on an as-needed or recurring basis. State and local governments use this code to source water-system components—primarily ductile iron pipe in multiple diameters, repair parts, nipples with specialized coatings, and spools—that meet ANSI and AWWA manufacturing standards. Issuing bodies are predominantly municipal water utilities and county water resources departments. The City of Dallas, Gwinnett County Department of Water Resources (Georgia), the City of Madison Water Utility (Wisconsin), and the City of Fort Worth Water Department are recent active buyers. Dallas and Madison have posted indefinite-delivery or as-needed agreements, while Gwinnett County issues frequent informal written quotations for smaller component orders.

Recent activity concentrates in Texas, Georgia, and Wisconsin. The City of Dallas posted a five-year ID/IQ master agreement for ductile iron pipe (solicitation BG2600030409, due June 12, 2026); Gwinnett County issued three separate quotations in May 2026 for ductile iron repair parts (IWQ 131138, due May 18, 2026), ductile iron spools (IWQ 130376, due May 18, 2026), and ductile iron pipe nipples with polyethylene coating (IWQ 128859, due April 23, 2026). The City of Madison Finance Department solicited unit-priced ductile iron pipe in multiple diameters per linear foot (RFQ 5508-0-2026-BG, due March 17, 2026), with local vendor preference and 90-day pricing hold requirements. The City of Fort Worth Water Department issued an RFP for cast iron valve boxes and lids under a one-year renewable agreement with a 30 percent small business participation goal (RFP 26-0068, due February 19, 2026). Response windows are tight across these opportunities, typically four weeks or fewer from posting to due date.