UNSPSC 31121520: Ductile iron shell mold machined casting

Ductile iron object cast from shell molds that has been machined

UNSPSC 31121520 Ductile iron shell mold machined casting (Commodity) encompasses ductile iron pipe, fittings, spools, repair parts, and related water infrastructure components that state and local water utilities procure for distribution system maintenance, expansion, and repair. Recent solicitations show water departments and utilities sourcing ductile iron pipe in bulk volumes under master agreements, smaller quantities of specialized fittings and spools through informal quotations, and cast iron valve boxes and lids through competitive RFPs. The issuing bodies are predominantly municipal water utilities and county water resource departments, with activity concentrated among repeat buyers in Texas, Georgia, and Wisconsin. The City of Dallas, Gwinnett County Georgia, and the City of Madison each posted multiple solicitations within the past four months, indicating sustained procurement demand from mid-sized to large municipal water systems.

The City of Dallas posted RFQ BG2600030409 on May 14, 2026, seeking a five-year ID/IQ master agreement for ductile iron pipe to support the Water Utilities department, with bids due June 12, 2026. Gwinnett County, Georgia issued three separate solicitations in May 2026—IWQ 131138 for ductile iron repair parts (due May 18), IWQ 130376 for ductile iron spools (due May 18), and IWQ 128859 for ductile iron pipe nipples with PE DIP coating in four sizes with ANSI/AWWA compliance (due April 23)—all targeted to the Department of Water Resources. The City of Madison Finance Department released RFQ 5508-0-2026-BG on March 3, 2026, requesting unit pricing for centrifugally cast ductile iron pipe in 6-, 8-, and 10-inch diameters conforming to ANSI/AWWA C151/A21.51 standards, with quotations due March 17, 2026. The City of Fort Worth issued RFP 26-0068 on January 26, 2026, for cast iron valve boxes and lids in multiple sizes meeting ASTM A48 Class 35 specifications, with proposals due February 19, 2026, and a 30 percent small business participation goal. All recent opportunities specify F.O.B. or delivery to the issuing jurisdiction's facilities and require compliance with established material and dimensional standards.