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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
assist with:

  • the design of new products for specialty applications
  • shop drawings
  • engineering submittals
  • coordinating outside sources for specialty fabrications
  • non-destructive testing
  • product recommendations
  • coating and lining recommendations

For more information on our engineering services, please contact us directly: