Northwest Pipe Company is a manufacturer of engineered steel pipe water systems. The Company produces steel pipeline systems for use in drinking water infrastructure, and has approximately eight manufacturing facilities, located in Portland, Oregon; Denver, Colorado; Adelanto, California; Parkersburg, West Virginia; Saginaw, Texas; St. Louis, Missouri; Salt Lake City, Utah, and Monterrey, Mexico. The Company, through Water Transmission Group, produces engineered welded steel pipe products for use in water transmission applications. The Company's solutions-based products are used in water transmission, plant piping, tunnels and river crossings applications. The Company also provides bar-wrapped concrete cylinder pipe, reinforced concrete pipe and T-Lock, a proprietary polyvinyl chloride (PVC) lining for concrete pipe sewer applications.