Download the ERVW® Fact Sheet

ERVW (Extended Range Variable Wall) Piping Calibration Blocks have been jointly designed by PH Tool and Holloway NDT. 

Our three page ERVW Fact Sheet covers the following information in one place:

  • Size and dimensions of test blocks
  • Inspection sizes covered by all three test blocks
  • History, uses and certification of test blocks
  • An entire page of ERVW blocks FAQs

Please fill out the form to the right to download your free copy of this fact sheet. 

Fact Sheet Image