UNSPSC 73181901: Arc welding services

UNSPSC 73181901 Arc welding services is a Commodity code covering on-call and project-based welding repair, fabrication, and installation work that state and local governments procure for water and wastewater infrastructure, transit systems, school facilities, municipal equipment, and specialized structures. Recent solicitations span field and shop welding on pipelines and water vaults, track maintenance for light rail, bridge railing fabrication and installation, stainless steel filter plate plasma cutting and welding, equipment repair at treatment plants, and emergency mobile welding for solid waste facilities. Issuing bodies include municipal water departments and utilities, transit authorities, counties, cities, school districts, and special-purpose authorities. The work typically requires current AWS or equivalent welding certifications (D1.1 for structural steel, D1.6 for stainless steel, 6G pipe certifications depending on application), often 5–7 years of documented experience in similar services, and compliance with applicable codes including NFPA 80, UL 325, OSHA confined-space standards, and FRA safety standards where rail work is involved. Contracts are awarded on lowest-responsive-bidder basis or through qualifications-based selection, with pricing structures that combine hourly labor rates, material markups, mobilization fees, and emergency response premiums.

Geographic activity concentrates in California (Alameda County, Santa Clara County, City of Austin), Texas (Northside Independent School District in San Antonio, City of Tampa), North Carolina (Charlotte Area Transit System, Greenville County), Georgia (City of Atlanta, DeKalb County, City of Statesboro, City of Union City), and Florida (Hillsborough County, New Smyrna Beach), with additional activity in Connecticut. Representative recent opportunities include Greenville County's RFP for Laurel Creek Pedestrian Bridge railings (244 linear feet of weathering steel, AWS D1.1 certified welders required, proposals due August 5, 2026), Charlotte Area Transit System's rebid for Blue Line track welding services encompassing rail end welding, engine burn welding, and thermite field welding (proposals due August 20, 2026 and March 6, 2026 for separate rebids), City of Tampa's ITB for as-needed welding and fabrication on water infrastructure with a 5% SLBE bid discount and estimated contract value of $70,000 (bids due July 31, 2026), Hillsborough County's ITB for mobile welding and fabrication at solid waste facilities requiring AWS TIG, MIG, and arc certifications with estimated value of $207,429.10 through July 2028 (bids due June 29, 2026), and Alameda County Water District's IFB for on-call field and shop welding services at approximately 2,000 hours annually with a two-year base term (bids due May 1, 2026).