UNSPSC 40173311: Black iron pipe nipple

A piece of externally threaded tube used to join two tubes and made with black iron.

UNSPSC 40173311 Black iron pipe nipple is a Commodity code that state and local governments procure as component fittings and connectors within water, wastewater, and stormwater infrastructure rehabilitation and construction projects. The code encompasses short-length threaded or unthreaded iron pipe segments used to join larger diameter main pipes, connect service laterals to mainlines, and assemble valve and fitting assemblies in municipal sewer and water systems. Santa Clara County is the issuing body evident in recent activity, posting infrastructure rehabilitation solicitations that integrate these components into larger sanitary sewer and pavement projects.

Santa Clara County posted two recent ITB opportunities that implicate this code, though neither lists black iron pipe nipples as a line item. The Sanitary Defect Repair Project Phase 2 (ITB ITBRDAFY270088, due September 17, 2026) called for removal and replacement of existing sewer mainline and service connection fittings—including wyes and laterals—that would typically incorporate pipe nipples as connectors within the assembly. The Central Expressway Pavement Rehabilitation Project (ITB ITBRDAFY260694, due May 21, 2026) addressed broader roadway infrastructure but did not isolate pipe fitting components. The code shows minimal direct specification in recent Santa Clara County procurement, suggesting that pipe nipples are either bundled within larger fitting or materials supply contracts, specified by the general contractor rather than itemized by the procuring agency, or not heavily requisitioned at the county level under this exact UNSPSC classification during the period captured.