UNSPSC 31351600: Solvent welded tube assemblies

UNSPSC 31351600 Solvent welded tube assemblies is a Class code that in practice captures metal fabrication and welding services for state and local infrastructure protection and facility maintenance, though the recent opportunity record shows limited direct alignment with the code's nominal scope. State and local governments procure steel fabrication work — including custom doors, protective cages, anti-vandalism covers, hand railings, and specialized structural work — through this code, with vendors expected to deliver machining, metal finishing, mobile welding, and emergency welding capabilities across multiple material types including steel, galvanized steel, stainless steel, aluminum, and coated variants. The issuing-body mix skews toward city facilities and maintenance departments addressing vandalism mitigation and asset protection rather than toward transit authorities or school districts.

The City of Tucson Facilities and Communications Maintenance department issued the single recent representative opportunity on record: RFP No. 240080 for steel fabrication services, posted March 26, 2026, with a pre-submittal meeting and response deadline of November 30, 2023. The solicitation carries Section 3 Program labor-hour set-asides (25% total labor hours, 5% targeted), Buy America compliance, and DBE participation requirements tied to federal housing and transit regulations. Work is performed primarily at vendor fabrication shops with a typical six-week completion timeline, and the contract structure offers an initial one-year term with four optional one-year extensions. Arizona shows the most recent documented activity, though the source provides insufficient geographic spread to characterize state-level concentration or multi-jurisdiction patterns.