UNSPSC 31101618: Ductile iron sand casting

Ductile iron object cast from sand molds

UNSPSC 31101618 Ductile iron sand casting, a Commodity code, covers ductile iron pipe components, fittings, and related parts that state and local water utilities procure for distribution system maintenance and repair. The work includes large-diameter pipe sections, gland retainers, tapping sleeves, saddles, and specialty ductile iron spools and repair parts, typically ordered through informal written quotations or competitive bids with FOB Destination Prepaid and Allowed delivery terms and unit pricing covering all freight and charges. Water departments dominate the issuing-body mix; Gwinnett County Department of Water Resources appears repeatedly across multiple recent solicitations, and the City of Dallas Water Utilities and City of Southlake Department of Public Works also solicit under this code. Vendors must comply with local ineligible source lists and debarment checks, provide project references for similar work, certify non-collusion, and meet state worker verification and tax compliance requirements.

Recent activity concentrates in Georgia and Texas. Gwinnett County has posted at least four informal written quotation solicitations since May 2026, including IWQ 131138 for ductile iron repair parts (posted May 13, 2026, due May 18) and IWQ 138607 for large-diameter ductile parts (posted September 14, 2026, due September 18, 2026) requesting six 30-inch pipe sections, gland retainers, and multiple tapping sleeves sized 24 to 30 inches. The City of Dallas solicited a five-year ID/IQ master agreement for ductile iron pipe (RFP BG2600030409, posted May 14, 2026, due June 12) to supply its Water Utilities department on an as-needed basis. The City of Southlake issued RFP2601B400CH260010 in July 2026 for utility parts and supplies across multiple categories with awards anticipated to multiple vendors. Response cycles are tight—typically five to ten days from posting to quote due date—and addenda are common, with vendors required to sign and return acknowledgments or face non-responsive rejection.