GTT Onset is a full-service non-destructive testing company, providing on-site and in-shop service. As well as providing customers with the technical and professional services for Engineering and Laboratory Analysis support to a broad range of industries.

The addition of Commonwealth Manufacturing has expanded our products and services to include the following:

  • Tube Tool Rentals and Repairs.
  • The full line of Tube Tools from TC Wilson and Elliott Tool Technologies.
  • Specialty Tube Tools for the Nuclear Industry are now offered through the Commonwealth Manufacturing division of GTT OnSET for select customers.


At GTT OnSET, our focus is tooling tubes. If you are cleaning, plugging, testing or measuring tubes, we have the tools from the best manufactures in the market.
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GTT OnSET is a unique company offering both the engineering and field expertise to help clients assess their plant systems and equipment.
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Tool Services

We rent a range of Tube Cleaners and Tube Tools and we repair a range of Tube Tools including all brands of Tube Cleaners as well as any tools from TC Wilson and Elliott.
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The Commonwealth Manufacturing division of GTT OnSET fabricates and sells specialty tools for the Nuclear industry involving CANDU reactors.
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About Us

GTT was formed in 1988. Today GTT OnSet works throughout Canada and the United States servicing customers in locations such Indonesia, Africa and Chile.
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