UNSPSC 31121521: Ductile iron shell mold machined casting assembly

Assembly of ductile iron object cast from shell molds that has been machined

UNSPSC 31121521 Ductile iron shell mold machined casting assembly (Commodity) covers large-diameter ductile iron pipe components and fittings—specifically 30-inch and 24-inch diameter pipe sections, gland retainers, tapping sleeves, saddles, and repair spools—that state and local water utilities procure for system maintenance, extension, and repair. Gwinnett County, Georgia's Department of Water Resources is the dominant recent buyer, posting multiple informal written quotation solicitations (IWQ) for these components since May 2026, each with response windows of three to five days and FOB Destination delivery requirements to the county's central facility in Lawrenceville. The City of Dallas Water Utilities and City of Southlake are also active, though with broader or less-detailed scopes; Dallas is establishing a five-year ID/IQ master agreement for ductile iron pipe announced in May 2026 with a June 12 response date, while Southlake solicited multiple utility parts categories in July 2026. Award is typically made to the lowest responsive and responsible vendor; several Gwinnett solicitations reserve the right to split awards among multiple suppliers. All jurisdictions require formal documentation including project references, non-collusion certification, occupation tax certificates, and worker verification compliance; Gwinnett County enforces an ineligible source list with strict debarment screening.

Recent activity concentrates in Georgia and Texas. Gwinnett County has posted at least four solicitations under this code since May 2026—IWQ 131138 (ductile iron repair parts, due May 18), IWQ 130376 (ductile iron spools, due May 18), IWQ 137554 (large diameter ductile parts, due September 8), and IWQ 138607 (large diameter ductile parts, posted twice with a September 18 due date)—indicating recurring procurement of these components, likely on a maintenance and operational cycle. The City of Dallas solicitation (BG2600030409) for ductile iron pipe closed June 12, 2026, while Southlake's broader utility parts RFP (RFP2601B400CH260010) closed August 21, 2026. Gwinnett County's multiple September 2026 solicitations signal ongoing demand heading into fall; addenda are common and mandatory acknowledgment is required for responsive bids. Vendors must be prepared for short turnaround cycles (three to five days from posting to response), detailed specification compliance including EBBA and Romac standards, delivery-window restrictions, and Georgia-specific compliance requirements such as illegal immigration reform verification.