UNSPSC 31101618: Ductile iron sand casting

Ductile iron object cast from sand molds

UNSPSC 31101618 Ductile iron sand casting is a Commodity code under which state and local water utilities procure ductile iron pipe, fittings, spools, and related cast iron components for water system infrastructure. Recent solicitations show that jurisdictions are buying finished ductile iron pipe in standard sizes for distribution networks, specialty fittings with polyethylene coatings, repair parts, and cast iron valve boxes and lids—all meeting ANSI, AWWA, and ASTM standards. Issuing bodies include water departments within larger cities and counties; the City of Dallas, City of Fort Worth, City of Madison, and Gwinnett County, Georgia all posted solicitations between March and June 2026. The work ranges from one-time commodity purchases to multi-year indefinite-delivery agreements, with vendors competing on unit pricing, quality, delivery capability, and compliance with local preference or small-business participation goals.

Geographic activity concentrates in Texas and Georgia, with secondary activity in Wisconsin. The City of Dallas posted an IFB (solicitation BG2600030409) on May 14, 2026, closing June 12, 2026, for a five-year ID/IQ master agreement to supply ductile iron pipe to the Water Utilities department; the RFP referenced Business Enterprise Hub forms, suggesting potential set-asides or preferences for disadvantaged vendors. Gwinnett County issued three separate Informal Written Quotations in May 2026—IWQ 131138 for ductile iron repair parts (due May 18) and IWQ 130376 for ductile iron spools (due May 18)—and in April 2026 IWQ 128859 for ductile iron pipe nipples with PE coating in four sizes, requiring ANSI/AWWA compliance and delivery to the Department of Water Resources facility in Lawrenceville. The City of Fort Worth released RFP 26-0068 on January 26, 2026, closing February 19, 2026, for an as-needed supply agreement for cast iron valve boxes and lids, establishing a 30 percent small-business subcontracting goal for suppliers in five North Texas counties. The City of Madison issued an RFQ on March 3, 2026, closing March 17, 2026, for centrifugally cast ductile iron pipe in three diameters totaling 1,060 linear feet, with local vendor preference scoring available.