12197 verified suppliers listed

Best NDT Companies in Ohio

Ohio is one of the most industrially diverse states for non-destructive testing, with a large manufacturing base, a significant aerospace and defense supply chain, and multiple nuclear and fossil power generation facilities that require ongoing in-service inspection. NDT companies in Ohio serve the automotive and heavy manufacturing corridor from Cleveland to Columbus and Dayton, the aerospace and defense supply chains around Dayton (Wright-Patterson AFB, GE Aviation), and the numerous fossil and nuclear power plants operating under ASME Section XI and NRC requirements. The state's geographic position at the center of the Midwest manufacturing belt makes Ohio NDT companies accessible to the broader Great Lakes industrial region.

Why these suppliers?

  • Ohio's manufacturing and automotive base generates consistent demand for weld inspection, casting and forging evaluation, and in-process NDT for automotive powertrain, structural components, and heavy equipment — giving Ohio NDT companies deep production inspection experience.
  • The GE Aviation and defense supply chain in the Dayton area supports Nadcap-accredited NDT companies with aerospace-grade capabilities for flight hardware inspection — a higher tier of capability than general industrial providers.
  • Ohio's nuclear fleet (Davis-Besse, Perry) and numerous fossil plants create ongoing demand for ASME Section XI in-service inspection, turbine NDT, and high-energy piping assessment from companies qualified for power generation work.

800 verified suppliers found

Leipsic, Ohio5.0(1)

At Laureate, we’re your partners in precision waterjet cutting and fabrication. Whether it’s intricate designs, custom prototypes, or specialized small-batch runs, our commitment to quality, precision, and customer satisfaction ensures every project is crafted to perfection.

+1 419-615-4601Website
Mansfield, Ohio4.0(3)

Leppert Machine in Mansfield, Ohio provides machine part repair, fabrication and welding, and custom machining services so you can get back to business.

+1 419-522-4721Website
Lima, Ohio5.0(3)

American made welding positioners. Turntable, tilting, and pipe roller positioners for welding. The original atlas style welding positioner by Lima Equipment Company.

+1 419-222-4181Website
Piqua, Ohio5.0(2)

We offer custom designed CAD and machined parts. We also design and manufacture quality 3-D printing. MASTER MACHINIST with over 27 years experience.

+1 937-214-6775Website
Lorain, Ohio

AS9100 Certified Precision Machine Shop

+1 440-277-6255Website
New Riegel, Ohio

Lucius Machine is a custom CNC shop that machines parts & products for a number of industries including automation, molds, job shop and many others.

+1 419-934-1703Website
Toledo, Ohio

M&D Machine specializes in supporting the stamping industry through engineering, precision machining and die build. We offer a wide range of services covering everything from repair or replacement of broken or worn components to complete design and build of stamping dies.

+1 419-214-0201Website

Frequently Asked Questions

What industries drive NDT demand in Ohio?
Automotive and heavy manufacturing is the largest sector — transmission components, engine blocks, castings, and forgings for Honda, GM, Ford, and their Tier 1 suppliers create ongoing weld and manufacturing NDT demand. Aerospace and defense (GE Aviation in Cincinnati, Wright-Patterson and defense contractors in Dayton) requires Nadcap-accredited and AS9100-integrated NDT capability. Power generation (multiple nuclear and fossil plants) requires ASME Section XI inspection. Structural and bridge inspection serves Ohio's aging infrastructure across its highway and railway networks.
Are there Nadcap-accredited NDT companies in Ohio?
Yes. Ohio's aerospace and defense supply chain — particularly in the Cincinnati and Dayton corridors — supports multiple Nadcap-accredited NDT providers holding scope in RT, UT, MT, PT, and ET. The Performance Review Institute (PRI) database at pri-network.com lists currently accredited Ohio companies searchable by commodity and location. Verify current accreditation status directly in the PRI database rather than relying on supplier-provided certificates, as Nadcap accreditations are time-limited and must be renewed.
What qualifications should an Ohio NDT company have for power plant work?
For fossil plant work (boiler tube inspection, turbine NDT, high-energy piping), ASNT Level II/III certification in the applicable methods and familiarity with ASME Section I and B31.1 codes are baseline requirements. For nuclear plant in-service inspection under ASME Section XI, UT personnel must hold PDI (Performance Demonstration Initiative) Appendix VIII qualifications. The company must maintain an ASME NQA-1 quality program and be pre-qualified by the utility's vendor qualification program. Ohio's nuclear utilities (FirstEnergy, Energy Harbor) maintain their own vendor qualification databases that NDT companies must complete before being awarded ISI scope.

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