Northwest Pipe Company has been a leading provider of steel pipe for industrial, agricultural and mining applications for nearly a century. With manufacturing expertise in spiral weld, ERW straight seam, bar wrap concrete cylinder pipe and rolled and welded pipe, we provide a wide range of product offerings to meet your specific requirements.


The Steel Advantage
Steel pipe's inherent strength means less wall thickness is required to accommodate working pressure and capacity requirements than competing materials. This translates into transportation and installation savings. Because Northwest Pipe offers engineered systems, lengths can be customized to minimize the number of field joints required, further reducing costs. Steel pipe's leak-proof design and high safety factor mean fewer operating troubles. Steel pipe has the best performance of all pipe materials in seismically active zones. 
Steel Water Pipe Design
The Water Pipe Design Manual includes an extensive collection of technical information on steel pipe. Registration opens the door to information on pipe design, joints, linings & coatings, corrosion protection, and an extensive collection of suggested specifications for various lining and coating combinations. Additionally, information of Northwest Pipe's national manufacturing capabilities is included in the manual.
Quality & Service Aren't Just Our Tag Line
Northwest Pipe's ISO-certified manufacturing facilities are strategically located across the U.S. to serve any North American project. Products are manufactured according to ASTM, AWWA, or other specifications based on project requirements. Northwest Pipe's Industrial & Power sales team is ready to help with any questions. Refer to the map below for contact information. Northwest Pipe's in-house engineering staff makes the product order to delivery process a smooth and efficient experience. Northwest Pipe even provides an experienced field representative to offer service and support though the installation process. So when we say, "Quality and Service You Can Depend On," we mean it! 