UNSPSC 31331100: Bonded structural assemblies

UNSPSC 31331100 Bonded structural assemblies is a Class code that covers the procurement of fabricated metal structural components—including I-beams, metal plates, and custom steel assemblies—used by state and local governments in facility maintenance, infrastructure repair, and specialized protective infrastructure projects. State and local issuing bodies soliciting under this code include state departments (Texas Workforce Commission, Illinois Department of Agriculture, Georgia Forestry Commission), city governments (Tucson, Philadelphia, Mississippi), and county purchasing offices (Ware County, Georgia). The scope of work encompasses both catalog steel products (standard I-beams and metal plates) and fabricated-to-order assemblies such as custom doors, hand railings, anti-vandalism boxes, welded cages, and structural components for bridge repair, with vendors typically expected to demonstrate capabilities in metal fabrication, machining, mobile welding, and material finishing across steel, galvanized steel, stainless steel, and aluminum.

Recent activity spans Texas, Illinois, Arizona, Georgia, and Mississippi. Representative opportunities include the State of Illinois Department of Agriculture's small purchase for eight 4-inch by 7.7-pound by 15-foot I-beams and two 4-foot by 8-foot metal plates totaling $3,900.00 (IFB 26406AGRBLDG4B52030, due April 30, 2026); the City of Tucson's RFP for comprehensive steel fabrication services including custom doors, railings, and anti-vandalism protective works (RFP 240080, due November 30, 2023, with Section 3 Worker and DBE compliance requirements); the City of Philadelphia, Mississippi's sealed-bid solicitation for Blount Street Bridge Repair including precast channel beam replacement and timber pile repair (IFB 3170035505, due April 23, 2026); and the State of Georgia's competitive bid for specified steel delivered to the Georgia Forestry Commission shop in Dry Branch (IFB 42000GFC0000445, due February 19, 2026). Response windows are typically tight—three to seven days—and vendors must hold liability insurance, prevail-wage compliance credentials, and manufacturer authorization where required.