UNSPSC 40174900: Pipe unions

UNSPSC 40174900 Pipe unions, a Class code, covers fittings and connectors used in sewer infrastructure rehabilitation and water system construction work that state and local governments buy to join or adapt piping runs. State and local issuing bodies soliciting under this code include county sanitation districts, county transportation and public works departments, and regional water authorities. The recent opportunities show concrete demand for wye fittings (adapters joining multiple pipe segments at angles) and specialized connectors used in sewer line point repairs, pipe-burst replacements, and mainline extensions. Work typically involves removal and replacement of aging vitrified clay pipe (VCP) and cast iron with modern PVC or HDPE, with wye fittings specified in precise sizes—4"×6", 4"×8", 4"×10"—to match existing and new mainline diameters and service connection requirements.

Santa Clara County, California dominates the recent activity under this code. County Sanitation District No. 2-3 issued an ITB (ITBRDAFY270088) due September 17, 2026 for the Structural Defect Repair Project Phase 2, a sewer infrastructure rehabilitation program in the unincorporated eastern foothills specifying removal and replacement of twenty-seven 4"×6" wyes, two 4"×8" wyes, and two 4"×10" wyes as part of service connection fitting work across thirty-five point repairs and five pipe-burst replacements. Santa Clara County also issued an ITB (ITBRDAFY260694) due May 21, 2026 for the Central Expressway Pavement Rehabilitation Project between Bowers Avenue and Scott Boulevard, though that opportunity's scope focuses on pavement work rather than pipe fittings and appears miscoded under this UNSPSC. The sanitation district opportunity represents the clearest signal of current demand under the code.