Traps (Launchers & Receivers)
Northwest Pipe Company Pressure Vessels are built and tested in accordance with the A.S.M.E. Boiler and Pressure Vessel Code Section VIII, Division I for unfired pressure vessels and bear a “U” stamp, Certificate No. 31157.
Northwest Pipe Engineering Services
Let Northwest Pipe assist your underground construction project with its engineering requirements. Our professional staff members can
For more information on our engineering services, please contact us directly: