UNSPSC 40173700: Pipe reducing flanges

Reducing flanges are used on pipes. They are commonly used in the chemical industry and other proccess industries as well

UNSPSC 40173700 Pipe reducing flanges is a Class code that in state and local procurement practice encompasses sanitary and storm sewer infrastructure repair and replacement, where reducing fittings and flanged connectors join pipes of different diameters during mainline point repairs, pipe-burst replacements, and sewer extensions. Recent solicitations show sanitation districts and county public works agencies buying removal and replacement services for existing vitrified clay pipe, cast iron, and older PVC systems, with new installations of PVC SDR26, high-density polyethylene (HDPE), and precast concrete components. The reducing flanges and wye fittings specified in these projects (for example, 4"×6", 4"×8", and 4"×10" wye configurations) are embedded in larger sewer rehabilitation contracts that combine pipe bursting, point repair, and mainline extension work. Issuing bodies are primarily regional sanitation districts and county public works departments in California, reflecting the concentration of aging sewer infrastructure in coastal and inland urban areas.

Santa Clara County shows repeat procurement activity under this code. County Sanitation District No. 2–3 issued ITB ITBRDAFY270088 on August 26, 2026, for the Structural Defect Repair Project Phase 2 in the unincorporated eastern foothills, with proposals due September 17, 2026, encompassing thirty-five sanitary sewer mainline point repairs and five mainline pipe-burst replacements requiring removal and replacement of service connection fittings including twenty-seven 4"×6" wyes, two 4"×8" wyes, and two 4"×10" wyes. Santa Clara County also posted ITB ITBRDAFY260694 on April 29, 2026, for the Central Expressway Pavement Rehabilitation Project, due May 21, 2026, which included removal and replacement of inductive traffic loops and related roadway infrastructure but does not directly engage the reducing-flange scope. The geographic activity centers on California, specifically the Santa Clara County area, with no recent opportunities identified in other states within the source material.