Northwest Pipe Company, together with its subsidiaries, manufactures and supplies engineered welded steel pipe systems in North America. The company offers large-diameter and high-pressure steel pipes, precast and reinforced concrete products, and bar-wrapped concrete cylinder pipes, as well as linings, coatings, joints, and fittings and specialized components. Its products are used in engineered, large-diameter, and high-pressure water infrastructure systems; power generation circulating water systems; penstocks; pipe piling; and water and wastewater treatment plants. The company sells its products primarily to installation contractors. Northwest Pipe Company was founded in 1966 and is headquartered in Vancouver, Washington.