Pipe Chart

Click on a cell in this chart to calculate the imperial and metric dimensions of a pipe with and without undertolerance. The undertolerance is removed from the ID of the pipe.

Pressure Vessel Engineering offers a wide range of services in the design and registration of pressurized equipment. See our advertisement at the bottom of the page.


Pressure Vessel Engineering has designed and reviewed pressurized equipment for over a thousand customers worldwide. We have the knowledge and experience to get the job done right.

  • Twenty years of successful experience
  • We are pressure equipment design and registration experts
  • Six Professional Engineers on staff
  • Design by code rule to ASME VIII-1, B31.3 and many others
  • Design by Finite Element Analysis (FEA) to ASME VIII-2
  • Burst testing to multiple codes
  • Solid Modeling and CAD
  • Fast professional help

Need our help? Our contact information is to the right.