Services

Ultrаsonic testing has been established as the only accurate method to measure bolt tension in the field. Ultrasonic measurement is the only way to accurately determine the actual load in a bolt, making it an essential component of our heat exchanger and pressure vessel solutions to ensure uniform gasket compression and leak-free startups. With over 30 years dedicated experience we are the most experienced and skillful in the world. We have solved failures on:

F1 Racing Engine Con-rod bolts
Grinding Mills
- Liner Bolts
- Critical Flange bolts
Crushers
Heat Exchanger Girth Joint Bolts
Valve flange bolts
Car Dumper Ring Rail bolts
Stacker & Reclaimer Slew Ring Bearing bolts
Large Bolted Tanks

Avoid using the wrong socket. Download our free Bolt to Nut comparison chart.

Services

"They haven't had to do an emergency shut for replacements on the BM since Boltstress have been crack testing and replacing - this is awesome news!"
- Carrapatena Mine, South Australia

"Working with Boltstress for our primary and secondary mill maintenance has been a game-changer for our operations. From the moment we engaged their services, the efficiency and professionalism were evident."
- Derek Phillips-Jones, Shutdown planner, Tanami Operations

"Good feedback for the team who came to site, easy to deal with and all work completed safely"
- Shutdown planner, Tanami Operations

"We get so much more than just ultrasonic skills from Trevor and his team"
- Lihir Gold Engineer

"There is so much valuable information in the Boltstress reports, far in excess of any of the competitors"
- Newcrest Production Superintendent

"Boltstress guys need no supervision, they just get the job done in a quick, professional, safe and accurate manner"
- Newcrest Engineer

"You're the best thing we ever found"
- IGO Meturlurgical Superintendent after we eliminated weekly breakdowns

"A great pick up"
- Newcrest Engineer after we found cracked bolts preventing a future failure

"We're so glad we could place the business with you, your support is so much better than the opposition"
- Technip Project Engineer

"Trevor has been fantastic and we really value his input and vast experience."
- Lee Hillyer, MD, www.mmdsizers.com

"Thanks for sending Steve out today. He did a great job, was easy to work with and would have no hesitation recommending him or using your services again."
- In-Situ Machining Manager, weservices.com.au

"Trevor has a wealth of bolting experience, knowledge and solutions. His team are well trained, safe, efficient and flexible."
- Marvin Muller - Processing Manager, Northern Star Resources Limited

"It was a pleasure working with Boltstress / Norbar as well. I would like to thank all the team members involved with the Wind Fences Project - Good job!! I will surely keep Boltstress on the speed dial as soon as the next opportunity arises."
- Nav Bhangu, Site Engineer, CPB Contractors

"We have been successful in stopping this flange from leaking which is an excellent result as I thought we may have had ongoing issues with it."
- Justin Anthony, Maintenance Superintendent, King of the Hill

"Thanks for the prompt supply of the bolt stress report. Appreciate your time and effort to complete SL1E slew bearing hold down studs. Great job and look forward to working with you on future projects."
- Andrew Carpenter, Rio Tinto

"During the shutdown, Daniel and Cassia did a fantastic job accommodating our requirements to check the bolts on the secondary crusher. Their flexibility and support were greatly appreciated â€” thank you both!"
- Crusher Specialist, Boddington Gold Mine - Newmont

"I called to thank Boltstress guys for not only doing a great job on our workscope but also for helping other work crews with theirs."
- Andy, Shutdown Supervisor at KCGM (Super Pit)

Avoid using the wrong socket. Download our free Bolt to Nut comparison chart.

Services

Applications

Services

"They haven't had to do an emergency shut for replacements on the BM since Boltstress have been crack testing and replacing - this is awesome news!" - Carrapatena Mine, South Australia

"Working with Boltstress for our primary and secondary mill maintenance has been a game-changer for our operations. From the moment we engaged their services, the efficiency and professionalism were evident." - Derek Phillips-Jones, Shutdown planner, Tanami Operations

"Good feedback for the team who came to site, easy to deal with and all work completed safely" - Shutdown planner, Tanami Operations

"We get so much more than just ultrasonic skills from Trevor and his team" - Lihir Gold Engineer

"There is so much valuable information in the Boltstress reports, far in excess of any of the competitors" - Newcrest Production Superintendent

"Boltstress guys need no supervision, they just get the job done in a quick, professional, safe and accurate manner" - Newcrest Engineer

"You're the best thing we ever found" - IGO Meturlurgical Superintendent after we eliminated weekly breakdowns

"A great pick up" - Newcrest Engineer after we found cracked bolts preventing a future failure

"We're so glad we could place the business with you, your support is so much better than the opposition" - Technip Project Engineer

"Trevor has been fantastic and we really value his input and vast experience." - Lee Hillyer, MD, www.mmdsizers.com

"Thanks for sending Steve out today. He did a great job, was easy to work with and would have no hesitation recommending him or using your services again." - In-Situ Machining Manager, weservices.com.au

"Trevor has a wealth of bolting experience, knowledge and solutions. His team are well trained, safe, efficient and flexible." - Marvin Muller - Processing Manager, Northern Star Resources Limited

"It was a pleasure working with Boltstress / Norbar as well. I would like to thank all the team members involved with the Wind Fences Project - Good job!! I will surely keep Boltstress on the speed dial as soon as the next opportunity arises." - Nav Bhangu, Site Engineer, CPB Contractors

"We have been successful in stopping this flange from leaking which is an excellent result as I thought we may have had ongoing issues with it."- Justin Anthony, Maintenance Superintendent, King of the Hill

"Thanks for the prompt supply of the bolt stress report. Appreciate your time and effort to complete SL1E slew bearing hold down studs. Great job and look forward to working with you on future projects."- Andrew Carpenter, Rio Tinto

"During the shutdown, Daniel and Cassia did a fantastic job accommodating our requirements to check the bolts on the secondary crusher. Their flexibility and support were greatly appreciated â€” thank you both!"- Crusher Specialist, Boddington Gold Mine - Newmont

"I called to thank Boltstress guys for not only doing a great job on our workscope but also for helping other work crews with theirs." - Andy, Shutdown Supervisor at KCGM (Super Pit)

Avoid using the wrong socket. Download our free Bolt to Nut comparison chart.

"They haven't had to do an emergency shut for replacements on the BM since Boltstress have been crack testing and replacing - this is awesome news!"
- Carrapatena Mine, South Australia

"Working with Boltstress for our primary and secondary mill maintenance has been a game-changer for our operations. From the moment we engaged their services, the efficiency and professionalism were evident."
- Derek Phillips-Jones, Shutdown planner, Tanami Operations

"Good feedback for the team who came to site, easy to deal with and all work completed safely"
- Shutdown planner, Tanami Operations

"We get so much more than just ultrasonic skills from Trevor and his team"
- Lihir Gold Engineer

"There is so much valuable information in the Boltstress reports, far in excess of any of the competitors"
- Newcrest Production Superintendent

"Boltstress guys need no supervision, they just get the job done in a quick, professional, safe and accurate manner"
- Newcrest Engineer

"You're the best thing we ever found"
- IGO Meturlurgical Superintendent after we eliminated weekly breakdowns

"A great pick up"
- Newcrest Engineer after we found cracked bolts preventing a future failure

"We're so glad we could place the business with you, your support is so much better than the opposition"
- Technip Project Engineer

"Trevor has been fantastic and we really value his input and vast experience."
- Lee Hillyer, MD, www.mmdsizers.com

"Thanks for sending Steve out today. He did a great job, was easy to work with and would have no hesitation recommending him or using your services again."
- In-Situ Machining Manager, weservices.com.au

"Trevor has a wealth of bolting experience, knowledge and solutions. His team are well trained, safe, efficient and flexible."
- Marvin Muller - Processing Manager, Northern Star Resources Limited

"It was a pleasure working with Boltstress / Norbar as well. I would like to thank all the team members involved with the Wind Fences Project - Good job!! I will surely keep Boltstress on the speed dial as soon as the next opportunity arises."
- Nav Bhangu, Site Engineer, CPB Contractors

"We have been successful in stopping this flange from leaking which is an excellent result as I thought we may have had ongoing issues with it."
- Justin Anthony, Maintenance Superintendent, King of the Hill

"Thanks for the prompt supply of the bolt stress report. Appreciate your time and effort to complete SL1E slew bearing hold down studs. Great job and look forward to working with you on future projects."
- Andrew Carpenter, Rio Tinto

"During the shutdown, Daniel and Cassia did a fantastic job accommodating our requirements to check the bolts on the secondary crusher. Their flexibility and support were greatly appreciated â€” thank you both!"
- Crusher Specialist, Boddington Gold Mine - Newmont

"I called to thank Boltstress guys for not only doing a great job on our workscope but also for helping other work crews with theirs."
- Andy, Shutdown Supervisor at KCGM (Super Pit)