Northwest Pipe Company manufactures and markets welded steel pipe and other products in the United States, Canada, and Mexico. The company's Water Transmission segment offers large diameter, high pressure, engineered welded steel pipe products for use in water infrastructure applications, primarily related to drinking water systems. This segment sells its products primarily to public water agencies directly or through installation contractors. Its Tubular Products segment provides smaller diameter, electric resistance welded steel pipes for use in a range of applications, including energy, construction, agricultural, and industrial systems. This segment markets its products through a network of direct sales force personnel and sales agents. The company's pipeline systems are also used for hydroelectric power systems, wastewater systems, and other applications, as well as industrial plant piping systems and certain structural applications. Northwest Pipe Company was founded in 1966 and is headquartered in Vancouver, Washington.