2227 verified suppliers listed

Best Manufacturing NDT Inspection Companies

Manufacturing NDT encompasses the full range of in-process and final inspection services that support quality assurance in metal fabrication, casting, forging, and precision component manufacturing. From weld inspection during structural fabrication to ultrasonic inspection of forgings for internal discontinuities to final PT/MT inspection before shipment, manufacturing NDT companies operate within production schedules and quality management systems designed to prevent nonconforming product from reaching customers. ISO 9001–certified NDT providers are common in manufacturing supply chains, while specialized sectors (pressure equipment, aerospace components, defense hardware) require higher-tier certifications including PED compliance, ASME stamps, and Nadcap accreditation.

Why these suppliers?

  • Manufacturing NDT companies integrate into production quality plans, operating on production-pace schedules and providing in-process hold-point inspection with same-day results that keep fabrication moving.
  • ISO 9001–certified NDT providers bring documented quality management systems with calibrated equipment records, certified personnel documentation, and nonconformance tracking that satisfies supplier quality audit requirements.
  • Companies with multi-method capability (UT, RT, MT, PT, VT) can serve as a single-source NDT partner for fabricators, eliminating the coordination burden of managing multiple specialty inspection subcontractors.

180 verified suppliers found

Odessa, Texas5.0(1)

Guardian NDT. Protecting the Future, Testing Today. Ensuring safety, quality, and reliability with advanced inspection solutions. Client Portal Core Values Culture Safety integrity Who We Are Welcome to Guardian NDT. At Guardian NDT , Our mission is to deliver top-tier Services through professionalism, safety, and integrity. We invest in training and leverage our extensive experience […]

+1 432-777-9729Website
Houston, Texas4.5(13)

Hellier has been providing Nondestructive Testing training and consulting services for over 40 years. With training centers located in Houston, TX, and Anaheim, CA, our staff of NDT professionals stand ready to address your NDT needs.

+1 281-873-0980Website
Farmington Hills, Michigan5.0(2)

Elevate quality control with ibg's Eddy Current Testing technology. Contact us to explore NDT solutions tailored to your needs. Explore now ▸

+1 248-478-9490Website
Norton Shores, Michigan4.9(17)

Engineering support services - Digital X-Ray, Industrial CT Scanning, Dye Penetrant, Mag Particle, UT, Eddy, 3D Scanning, Reverse Engineering

+1 231-246-8473Website
Kent, Washington4.5(4)

With facilities in Irving, San Antonio and Austin, IIA has a significant presence in Texas, with a reach that spans North America.

(253) 850-1208Website
Sonora, California4.0(4)

Industrial Inspection & Analysis (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth of industrial sectors and geographies.

+1 833-777-8660Website
Alpharetta, Georgia2.6(5)

Industrial Inspection & Analysis (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth of industrial sectors and geographies.

+1 470-552-8301Website
Alachua, Florida4.3(3)

Get reliable wireless EMC testing services at IIA. Ensure your products meet regulatory standards for electromagnetic compatibility.

+1 352-472-5500Website
Bixby, Oklahoma5.0(5)

I2C is an inspection and metallurgical engineering firm that provides inspection support, mechanical integrity analysis, and failure analysis to a variety of industries.

+1 918-805-0074Website
Vancouver, Washington5.0(1)

Specializing in: CWI Welding Inspection, ASNT NDT / NDE, MT, UT, PT, and VT. Over-head crane inspection & repair. Industrial Electrical and I&C Services.

+1 360-200-1996Website
Casper, Wyoming4.0

IMCI, a Cogent company, is one of 12 best-in-class partner companies providing pumping and process equipment solutions and service to the Oil & Gas, Petrochemical, Water and Wastewater treatment industries.

+1 307-237-0919Website
Pittsburgh, Pennsylvania4.5(2)

Industrial Testing Laboratory Services (ITLS) and engineering services group offers materials testing, chemical analysis, and other specialized testing.

+1 412-963-1900Website
St Joseph, Missouri

Ultrasonic Testing Weld Inspection Magnetic Particle Testing Liquid Penetrant Testing

+1 816-262-8248Website
El Paso, Texas5.0(1)

NDT Servicing El Paso, TX, Oil and Gas, Refineries, Power Generation, and Process Facility welding inspection needs. Call 915-221-1900

+1 915-221-1900Website

NonDestructive Testing company with 5 offices located in Seattle, Portland, Oakland, Los Angeles, San Diego, and Houston providing RT (X-Ray & Gamma), UTT, UTSW, MT, PT, VT, GPR, PMI, HT, and LT to Fabrication, Marine, and Construction industries. Our technicians work both local and international jobs in the Marine industry. Seeking entry level and experienced Level II technicians in RT, UT, MT, PT seeking a career in NDT.

Website

Frequently Asked Questions

What NDT methods are most common in metal fabrication and welding shops?
Visual testing (VT) by certified inspectors is the first line of quality assurance for all welds. Magnetic particle testing (MT) and liquid penetrant testing (PT) are standard for surface inspection of welds, heat-affected zones, and machined surfaces. Radiographic testing (RT) is commonly specified for pressure piping, pressure vessels, and structural welds requiring volumetric inspection. Ultrasonic testing (UT), including PAUT, is increasingly used where RT is impractical or where weld volumetric data is needed for code compliance and quality records.
What is a Certified Welding Inspector (CWI) and when is one required?
An AWS Certified Welding Inspector (CWI) is qualified to review welding procedures, evaluate welder performance qualifications, and perform visual inspection and documentation of welds. CWIs are required on many structural steel, pressure vessel, and pipeline projects — often by contract specification or by code (AWS D1.1, ASME Section IX). CWI qualification requires passing a three-part AWS examination covering fundamentals, practical application, and code knowledge. CWIs work closely with NDT technicians on fabrication projects but hold a distinct role focused on visual and procedural compliance rather than volumetric inspection.
How do I set up an NDT program for a new fabrication project?
Start with the governing code or standard specified in the project contract (ASME, AWS D1.1, API 650, etc.) and identify the required inspection categories, methods, and acceptance criteria. Develop a quality plan or inspection and test plan (ITP) that identifies inspection hold points, required method and level, documentation requirements, and release authority. Select an NDT company whose scope of certification covers all required methods. Establish the inspection cadence early — NDT integrated into the fabrication schedule avoids the bottleneck of end-of-project inspection that compresses schedules.

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