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

Beresford, South Dakota

Irwin Industrial offers expert industrial inspection, consulting, and testing services to ensure safety and quality in your projects.

+1 605-743-4459Website
Gilbert, Arizona

BS Indiana Univeristy, API 510 Inspector #20977, American Welding Society CWI #04061601, UT level II and CFI Helicopter. Experience in inspecting UOP CCR Platformer unit and reactors during fabrication and insitu accesment during unit shut downs. 30+ years experience in builting/expanding and turn around work in oil refinery processes units around the world. UA journeyman Steam Pipefitter.

Tucson, Arizona

Level 3 Consultant / Instructor / Advisor Utilizing my 30+ years of experience in Nuclear Energy, Aerospace, Manufacturing and Military, I provide the following: NDT Program set up and management NDT Instructor / training / certifications Third party over-site / audits Written practice / quality manual Procedures / technique sheets Testing equipment recommendations Compliance with NAS 410 / SNT-TC-1A

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Edgewood, Maryland5.0(3)

Authorized & Certified Boiler/Pressure Vessel & Structural Welding Inspectors

+1 410-676-9962Website
Elk Grove Village, Illinois4.6(25)

MIL delivers precision metal finishing, coating, and non-destructive testing services backed by 80 years of experience and extensive approved specifications.

+1 847-437-4488Website
Middleboro, Massachusetts

Mass Tank�s 60,000 square foot facility in Middleboro, MA was formerly used to manufacture the famous Maxim line of fire trucks. Along with sandblasting and fiberglass booths which are used to prepare the tanks, we use the original paint bay, the largest in New England, to apply the final paint coatings. The strategically located manufacturing site affords the Mass Tank delivery team accessibility to the US Highway interstates and ports of shipping for international clients. Our facility has manufactu

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Northborough, Massachusetts

Matec Instrument Companies, Inc. is an industry leader in providing ultrasonic nondestructive testing solutions. Our systems incorporate a wide range of features tailored to meet the needs our customers. Matec provides a full range of in-house services including mechanical and electronic design, machining and fabrication, instrumentation and control, and data acquisition and analysis software. This

(508) 393-0155Website
Howell, Michigan4.0(5)

About us The MS Ultrasonic Technology Group is a technology and innovation leader in the field of ultrasonic welding of plastics and is part of the Schunk Group. Read more Ultrasonic welding Ultrasonic technology has already established itself in many industries due to advantages such as precision, tightness and much more. Read more

+1 800-423-0154Website
Fontana, California4.5(13)

Any accredited testing facility will give you accurate and reliable results. But at NDT, we’re committed to helping you meet project deadlines too. We provide the results you need in a day or two, not a week or two.

+1 909-988-4054Website
Portland, Oregon5.0(3)

NDE Professionals, Inc. specializes in providing Nondestructive testing and Quality consulting to the Commercial Aerospace, Defense, Energy, Maritime, Petrochemical, Pulp and Paper, Semiconductor and Transportation Industries.

+1 503-287-5255Website
Bryan, Texas3.5(4)

Helping With Your Industrial Radiography Needs NDE Solutions, LLC is a mid-size NDT company specializing in Radiographic Testing (RT).  We take pride in our ...

+1 979-778-8783Website

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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