UNSPSC 40174101: Carbon steel pipe socketweld flange

Pipe socketweld flange made of carbon steel

UNSPSC 40174101 Carbon steel pipe socketweld flange, a Commodity code, represents specialized piping components used in municipal water and wastewater infrastructure projects. State and local governments procure these flanges as part of larger sewer and water main rehabilitation, repair, and extension contracts where pipe connections require socketweld assembly methods. The work falls within civil infrastructure maintenance and capital improvement programs executed by county sanitation districts, municipal utilities, and county public works departments. While the code's nominal scope identifies carbon steel socketweld flanges specifically, recent state and local solicitations show demand emerging primarily through integrated infrastructure projects where such components are specified as part of comprehensive pipe replacement and system upgrades rather than as standalone material purchases.

Santa Clara County, California dominates the recent activity under this code, with two ITB notices posted between April and August 2026. The County Sanitation District No. 2-3 Structural Defect Repair Project Phase 2 (ITB ITBRDAFY270088, due September 17, 2026) encompasses sanitary sewer mainline repairs and extensions involving removal and replacement of vitrified clay pipe and cast iron with PVC and HDPE pipe, along with associated fittings and wyes; this project type and geographic concentration suggest socketweld flanges may be specified in connection details not fully itemized in the notice summary. The Central Expressway Pavement Rehabilitation Project Between Bowers Avenue and Scott Boulevard (ITB ITBRDAFY260694, due May 21, 2026) focuses on pavement, curb, and traffic infrastructure rather than pressurized or gravity pipe systems where socketweld flanges typically apply. Recent activity under this code remains sparse; the code shows limited direct solicitation activity in state and local procurement channels as of October 2026.