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 encompassing structural steel members — W-beams, H-piles, and I-beams — that state and local governments procure for bridge and roadway infrastructure projects. Recent solicitations show county and state transportation departments buying these materials as components of larger capital construction efforts, where the structural sections are delivered to project sites ready for installation. The code spans both small-value supply contracts and materials bundled within major roadway rehabilitation packages. Issuing bodies include county transportation and capital improvement offices (notably Greenville County, South Carolina, which posted two separate solicitations within the past month) and state departments such as the Illinois Department of Agriculture sourcing materials for facility maintenance and upgrade.

Greenville County, South Carolina dominates recent activity under this code. The county issued IFB27022 for W-beams (sealed bids due October 9, 2026) calling for 12 W-beams in two size configurations, 27 feet in length, delivered F.O.B. destination to the Bridge Yard in Travelers Rest, South Carolina; and IFB27014 for H-piles (sealed bids due September 3, 2026) requesting 24 H-piles in two length configurations (30 and 40 feet), also delivered to the same Bridge Yard location. Both solicitations weighted cost at 99 percent of award evaluation. The State of Illinois Department of Agriculture posted a smaller Basic Ordering Agreement (26406AGRBLDG4B52030, due April 30, 2026) for eight I-beams and two metal plates totaling $3,900. Broward County, Florida included structural steel as part of a larger roadway resurfacing project on Royal Palm Boulevard (TRN2132636C1, due September 14, 2026) funded through Federal Highway Administration and County Transportation Surtax Funds. The code shows activity concentrated in South Carolina and Florida, with isolated state-level procurement in Illinois; no geographic clustering beyond individual county transportation departments is evident from recent opportunities.