Manufactures large diameter, high-pressure steel pipe used primarily for water transmission, and smaller diameter, electric resistance welded steel pipe for use in a wide range of construction, agricultural and industrial applications. (Nasdaq: NWPX).NW Pipe Company Contact | Home | Site Map | Investor Information About NW Pipe Chairman's Message Senior Management Code of Ethics Quality Assurance The Steel Advantage Products News Room Locations Map Human Resources Investor Information Technical Resources About Northwest Pipe Since 1966, Northwest Pipe Company has been a leading manufacturer o