Northwest Pipe Company, together with its subsidiaries, engages in the manufacture and sale of water-related infrastructure products in North America and Canada. It operates through two segments, Engineered Steel Pressure Pipe (SPP) and Precast Infrastructure and Engineered Systems (Precast). The SPP segment provides large-diameter and high-pressure steel pipeline systems for use in water infrastructure applications, which are primarily related to drinking water systems. Its products are also used for hydroelectric power systems, wastewater systems, seismic resiliency, and other applications. In addition, this segment makes products for industrial plant piping systems and certain structural applications. The Precast segment offers stormwater and wastewater technology products, precast, and reinforced concrete products, including reinforced concrete pipe, manholes, box culverts, vaults and catch basins, pump lift stations, oil water separators, biofiltration units, steel casing pipes, and bar-wrapped concrete cylinder pipes, as well as pipeline system joints, fittings, specialized components, and other environmental and engineered solutions. The company sells its water infrastructure products under the ParkUSA, Geneva Pipe and Precast, Permalok, and Northwest Pipe Company brands primarily to installation contractors. Northwest Pipe Company was incorporated in 1966 and is headquartered in Vancouver, Washington.