UNSPSC 31331500: Solvent welded structural assemblies

UNSPSC 31331500 Solvent welded structural assemblies is a Class code under which state and local governments procure structural steel components—primarily W-beams, H-piles, and I-beams—for bridge construction, infrastructure repair, and facility maintenance projects. The work solicited under this code involves the furnishing and delivery of prefabricated or mill-produced steel structural members to specified dimensions, grades, and ASTM designations, with evaluation typically weighted heavily toward price (99 percent in recent solicitations) and responsiveness to technical requirements. Issuing bodies include county governments and state departments, with Greenville County, South Carolina emerging as a repeat buyer of structural steel components for bridge yard projects within the recent opportunity set.

Recent activity clusters in South Carolina and Illinois. Greenville County posted two IFBs within the past month—IFB 27022 for twelve W-beams (sealed bids due October 9, 2026) and IFB 27014 for twenty-four H-piles (bids due September 3, 2026, with a non-mandatory pre-bid meeting on August 26)—both requiring delivery F.O.B. destination to the Bridge Yard at Travelers Rest, South Carolina, with Performance and Payment Bonds and three references documenting similar work. The State of Illinois Department of Agriculture issued a Basic Ordering Agreement for metal I-beams and metal plates (due April 30, 2026, contract value $3,900) for the Illinois State Fair Building and Grounds. All recent solicitations specify firm pricing on net 30-day payment terms, F.O.B. destination delivery, and insurance requirements (general liability minimums of $1 million per occurrence and $2 million general aggregate). Vendors must provide proof of manufacturer authorization, ASTM designations, delivery timelines, and responsiveness documentation; prequalification or certification may be required depending on project funding source and contract value thresholds.