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The Best People, Superior Equipment, Effective Processes

Stronghold provides our partners the safest, most efficient quality solutions in the industry. We achieve this by developing and cross-training highly skilled craftsmen, investing in state-of-the-art equipment, and utilizing effective methods which provide significant cost and productivity synergies.

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Capital Projects

Capital Projects



Locations 35


Craftsmen Trained 8,000+

Craftsmen Trained

Specialty Equipment 1,700+

Specialty Equipment

Percentage of major refinery companies that we work with 100%

Percentage of major refinery companies that we work with

Elite Turnaround Specialists page

Our People Are the Difference

Stronghold employs full-time supervision and key craft year-round, which delivers consistent industry leading performance in safety and quality.

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Careers Page Why Work for Stronghold Background

Your guys did their usual outstanding work on our recent hydrocarbon reactor catalyst and platform chloride treater changeouts. As always, job well done.

Catalyst Coordinator/Planner

Thank you and your team for the great work supporting our Eastman TCO freeze recovery and outage efforts. All of the guys on site did a fantastic job working safely and diligently, even through adjustments to scope. We know manpower was tight, but you came through for us in our time of need.

Maintenance Area Manager

I want to thank and recognize Cat-Spec for an outstanding job working on the Acrylics 2020 cat change turnaround project. Your team completed the outage without any safety incidents, reworks, or delays. All of your people were truly professional from top to bottom. This was a best-in-class performance.

Turnaround Coordinator
The Dow Chemical Company

The Cat-Spec crew has always exceeded expectations, and they've consistently gone above and beyond every time we've worked together. The compliance they are proving is second-to-none while being the best that the MEC has seen in a very long time. The quality of work and professionalism of the on-site crew has been remarkable. Thank you!

Turnaround Coordinator
The Dow Chemical Company

I want to express all around gratitude, appreciation, and high praise for the job performance executed by the ETS Crew. NatGas management gave ETS a grade of 100 out of 100. Based on the excellent performance and professionalism displayed by your entire staff, we'll be looking to you again for help with our upcoming turnaround work next season.

Turnaround Coordinator

We would like to thank Stronghold for their outstanding performance. The detailed attention given to safety, supervision, and job execution was greatly appreciated and helped us meet our objectives. I'm amazed at how effectively your team dealt with fouling reactors along with other tasks that typically go along with this job. All this was accomplished with a disciplined safety mindset with zero injuries or first aid cases.

Catalyst Change and Improvement Specialist
The Dow Chemical Company