UNSPSC 40181800: Welded steel tubes

Tubes made of welded steel

UNSPSC 40181800 Welded steel tubes is a Class code that encompasses structural and utility steel tubing products used in state and local infrastructure, transportation, and utility projects. The code captures the procurement of fabricated welded steel tubes in various diameters and gauges for applications including guardrail systems, utility support structures, traffic control infrastructure, and related roadway and facility components. State and local governments procure welded steel tubes as materials and components within larger infrastructure rehabilitation and construction projects, typically as line-item materials sourced through general contractors or materials suppliers bidding on comprehensive construction or pavement work.

Santa Clara County posted an ITB (ITBRDAFY260694) on April 29, 2026, for the Central Expressway Pavement Rehabilitation Project between Bowers Avenue and Scott Boulevard, with bids due May 21, 2026, which includes removal and installation of Midwest Guardrail System components as part of a comprehensive roadway rehabilitation scope covering partial depth recycling, hot mix asphalt overlay, curb and gutter installation, ADA improvements, and traffic signal modifications. The project requires completion within 142 working days. The ITB does not identify a specific budget or award value, set-aside designations, or incumbent constraints. Physical bid submission is required to the County Clerk of the Board of Supervisors at the County Government Center in San Jose, with no electronic bidding accepted. Activity under this code remains limited in the recent state and local opportunities block, with the Santa Clara County infrastructure project representing the primary visible application of welded steel tubing procurement.