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. 

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