UNSPSC 31331309: Stainless steel sonic welded structural assemblies

UNSPSC 31331309 Stainless steel sonic welded structural assemblies is a Commodity code that in practice encompasses structural steel materials and components used in bridge construction, roadway infrastructure, and building systems. Recent state and local solicitations under this code show purchasing focused on steel structural elements for capital projects — including steel truss bridge decks, structural shapes for building construction, and general steel material procurement by educational institutions. Issuing bodies include city capital delivery departments, county transportation authorities, and universities. The City of San Antonio Capital Delivery Department appears as a repeat buyer, posting multiple construction RFPs with structural component scope under its 2022 Bond program.

Recent activity concentrates in Texas and Florida. The City of San Antonio posted two construction RFPs in June and July 2026 — Fire Station #33 Facility Replacement (RFCSP2026071, RFP due July 30, 2026) and Hays Street Bridge Connections & Eastside Area Streets (RFCSP2026025, RFP due August 25, 2026) — both naming structural shapes and building construction in applicable NIGP categories. Sarasota County, Florida solicited construction of a steel truss pedestrian bridge on Midnight Pass Road under IFB format with bids due July 20, 2026, explicitly scoping steel truss bridge deck and related structural elements. The University of Wisconsin-Madison posted a metals procurement RFB (2026-UWMSN-01207-RFB, due April 20, 2026) requesting steel, aluminum, and stainless steel materials, though specific structural assembly detail is not enumerated in the published summary.