UNSPSC 30104000: Hollow structural sections HSS

Rectangular, square and round structural steel tubing sections that perform a structural function in the engineering concept. They are sometimes used in mechanical applications, however such use is not recommended for the conveyance of liquids or gases under pressure. This new nomenclature replaces older terms such as "structural tubing" and "structural pipe".

UNSPSC 30104000 Hollow structural sections (HSS) is a Class code that covers the supply of structural steel components — I-beams, metal plates, and fabricated steel assemblies — to state and local government facilities, infrastructure projects, and maintenance operations. The recent opportunities show state and local buyers procuring raw steel materials and custom steel fabrication services for building repair, bridge work, and asset-protection installations. Issuing bodies span state departments (Texas Workforce Commission, Illinois Department of Agriculture, Georgia Forestry Commission), cities (Tucson, Philadelphia), and counties (Ware County, Georgia). The work ranges from small-purchase materials supply — such as Illinois Department of Agriculture's order for eight I-beams and metal plates totaling $3,900 — to comprehensive steel fabrication services where vendors fabricate custom doors, railings, protective cages, and anti-vandalism covers for municipal facilities.

Recent activity shows geographic spread across Texas, Illinois, Georgia, Arizona, and Mississippi. The State of Illinois Department of Agriculture issued a Basic Ordering Agreement (solicitation 26406AGRBLDG4B52030) in April 2026 for metal I-beams and plates with a three-day response window and contract value of $3,900; the City of Tucson issued an RFP (240080) in March 2026 for steel fabrication services supporting facilities maintenance with Section 3 labor requirements and a one-year initial term plus four one-year renewal options; and the State of Georgia through Ware County posted an IFB (42000GFC0000445) in February 2026 for steel materials to supply the Georgia Forestry Commission shop, with delivery required within four weeks and pricing to include all shipping fees. The City of Philadelphia, Mississippi solicited sealed bids (3170035505) in April 2026 for the Blount Street Bridge Repair project, including replacement of precast channel beams, with a 30-working-day contract duration and bid opening scheduled for April 23, 2026.