Northwest Pipe Company, together with its subsidiaries, engages in the manufacture and supply of water related infrastructure products in North America. It operates in two segments, Engineered Steel Pressure Pipe (SPP) and Precast Infrastructure and Engineered Systems (Precast). The SPP segment offers large-diameter and high-pressure engineered 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 provides precast and reinforced concrete products, including manholes, box culverts, vaults, catch basins, pump lift stations, oil water separators, biofiltration, 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 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.