Weld Testing That Makes the World Safer

From bridges to hand rails, and pipelines to power plants, welding helps to hold our world together.

There are countless methods and materials that can be used in welding. A sound weld starts with a skilled, certified welder and a qualified procedure — and IIA can help you ensure both.

As a world-renowned leader in laboratory services, IIA offers complete weld procedure and welder qualification services. Our St. Louis lab uses accredited ISO/A2LA methods in accordance with the following welding code standards:

  • American Welding Society (AWS)
  • American Society of Mechanical Engineers (ASME)
  • American Petroleum Institute (API)
  • Naval Sea Systems Command (NAVSEA)

Our Destructive Testing

We are experts in the use of both non-destructive and destructive methods to ensure that welds meet all applicable testing criteria. Our destructive testing services include:

  • Tensile Testing
  • Bend Testing
  • Charpy Impact Testing
  • Hardness Surveys
  • Macro Testing

Our Experience

Our experienced personnel deliver timely, accurate results, using a wide variety of test equipment. Mechanical test specimens are prepared in a fully equipped machine shop. We also offer design and fabrication of test fixtures.

When you partner with a leader like IIA, you’ll gain confidence in the safety and quality of your welds and minimize potential risks, delays and expense.


To learn more about our weld testing services or to request a quote, contact us today.

Why IIA?

With roots that date back nearly a century, our St. Louis lab has qualified countless weld procedures and certified generations of skilled welders. From New York to California, leading companies in virtually every industry trust IIA for their weld testing needs. When our experienced and certified weld inspectors sign-off on a weld procedure or welder certification, you’ll have peace of mind knowing you can count on the quality of your welds. Coupled with reasonable pricing and fast turnaround times, you’ll see why our client relationships have stood the test of time — much like the welds we qualify.