FLAWSPEC Manufacturing Inc.

Custom Flawed Specimens

Designed for performance demonstration, procedure qualification and personnel qualification in accordance with various codes and standards such as: 

  • ASME XI Appendix VII and VIII
  • ASME CodeCase 2235
  • ASME B31 Case 179
  • ASME B31 Case 181
  • API

Custom flawed specimens are manufactured to suit any application from small diameter, thin wall piping and tubing up to large diameter heavy wall piping and pressure vessels.

Specimen Types

  • Piping  
  • Plate
  • Tubing
  • Nozzles
  • Castings
  • Forgings
  • Pressure Vessels


  • ASME Material Groupings - P1 to P45 inclusive.
  • Dissimilar material weldments.
  • Machining for custom sizes and joint designs.

Customer supplied material can also be used.


Flaw Sizing Tolerances are on the Manufacturing Process page.