UNSPSC 31163000: Couplings

UNSPSC 31163000 Couplings, a Class code, encompasses pipe couplings and related connection fittings used in water distribution and sanitary sewer infrastructure projects. State and local governments procure these items both as components within larger construction contracts and as standalone materials under annual supply agreements. The scope includes compression couplings, service saddles, wyes, and other joinery pieces sized for various pipe diameters—typically 4-inch through 10-inch in sanitary sewer work and 6-inch in water main replacement. Issuing bodies soliciting under this code span counties (Pinellas County, Santa Clara County, DeKalb County, Jackson County Utility Authority), cities (City of Marietta), and special-purpose districts (Sanitation District No. 2-3). Water and sewer utilities dominate the activity, with infrastructure rehabilitation and main replacement driving procurement.

Recent opportunities concentrate in Florida, California, and Georgia. Pinellas County, Florida issued an IFB in October 2026 for the Ridgewood Estates Sewer Improvements and 82nd Avenue & 113th Street Water Main Improvements projects, requiring approximately 500 linear feet of 12-inch PVC sanitary sewer pipe and 6,800 linear feet of 6-inch water main replacement with associated couplings and fittings, with a Minimum Qualification Submittal due October 13, 2026 and final bids due November 5, 2026. Santa Clara County, California issued an ITB in August 2026 for the Structural Defect Repair Project Phase 2, involving sanitary sewer mainline point repairs and pipe-burst replacements using PVC and HDPE pipe with service connection wyes, due September 17, 2026. The City of Marietta, Georgia solicited water service saddles, couplings, clamps, and valves under annual contract BL121-26 with bids due September 22, 2026. DeKalb County, Georgia issued a three-year multiyear ITB for quick insertion valves and related components due August 27, 2026.