Northwest Pipe Co is a manufacturer of water-related infrastructure products. The company has two operating segments; Engineered Steel Pressure Pipe segment manufactures large-diameter, high-pressure steel pipeline systems for use in water infrastructure applications, which are related to drinking water systems. These products are also used for hydroelectric power systems, wastewater systems, seismic resiliency, and other applications, and Precast Infrastructure and Engineered Systems segment manufacture stormwater and wastewater technology products, high-quality precast and reinforced concrete products, including manholes, box culverts, vaults, and catch basins, pump lift stations, oil water separators, biofiltration, and other environmental and engineered solutions.