435 verified suppliers listed

Best NDT Companies in California

California's NDT market spans two distinct but equally demanding sectors: aerospace and defense inspection concentrated in the Los Angeles Basin and San Diego, and industrial inspection serving the state's refineries, petrochemical facilities, and aging infrastructure. Aerospace NDT companies in California serve Boeing, Northrop Grumman, Raytheon, SpaceX, and hundreds of Tier 1 and Tier 2 suppliers requiring Nadcap-accredited NDT for flight-critical structure, engine components, and composite assemblies. Industrial NDT companies serve the Bay Area and Southern California refinery corridor, performing API inspection and corrosion monitoring. Both sectors demand rigorously certified technicians and documented inspection procedures.

Why these suppliers?

  • California's aerospace NDT market — centered on the LA Basin and San Diego — demands Nadcap accreditation, AS9100 integration, and ITAR compliance for inspection of flight-critical metallic and composite structures.
  • Southern California's refinery corridor and Bay Area industrial facilities generate consistent demand for API 510/570 inspection, corrosion monitoring, and fitness-for-service assessments.
  • California's size and industrial diversity mean NDT companies here have invested in the full range of advanced methods — PAUT, TOFD, digital radiography, and automated UT systems — giving buyers access to the latest inspection technology.

32 verified suppliers found

Folsom, California5.0(4)

360 Pipes provides NASSCO-certified manhole and CCTV sewer inspections across California. Fast, dig-free service with Certified PACP reports. Free quote.

+1 833-360-7473Website
Huntington Beach, California4.1(19)

At Accurate Weld Testing Lab, we are your trusted partner in the pursuit of welding perfection. With a relentless commitment to precision, safety, and innovation, we stand at the forefront of weld quality assurance.

+1 714-373-3852Website
Torrance, California4.0(4)

AES NDT Non Destructive Testing Services for the Petroleum, Chemical and Agricultural industries

+1 310-953-9822Website
Los Angeles, California

The American Advanced Technical Academy (AATA) is a Los Angeles-based 501c3 nonprofit founded in April 2015. AATA’s mission is to empower Los Angeles women and men living below the poverty line and veterans with poor job prospects through free Nondestructive Testing (NDT) training. After completing

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Anaheim, California

Turn to Code NDT, LLC for non-destructive testing. We inspect welding on various equipment for the oil and gas industry.

+1 562-424-0344Website
Orange, California

Crest Inspection and Consulting offers top-notch ultrasonic testing services for accurate and reliable results.

Website
Temecula, California5.0(1)

Davis Laboratories, Inc. provides nondestructive testing, including concrete x-ray, radar, coring, and radiography across California, Nevada, Utah, and Arizona.

+1 714-330-0154Website
Mountain View, California4.2(5)

Fusion Technology offers expert welding, brazing, & soldering services. Get training & AWS certified inspections. Contact us for mobile solutions.

+1 650-283-9105Website
Rowland Height, California

We Offer Third Party Inspection Services in the US., and have a global footprint with inspectors in China, India, Mexico and Vietnam. Acting as your eyes and ears, we ensure you receive exactly what you need. Inspection goods before delivery, rather than receipt, saves time, money and reduces potential impact. Click here to see details. Scope of Inspection Non Destructive Test: UT, PT, MT, RT, ECT, VT Mechanical Property Test Chemical Composition Test Welding Inspection Hydrostatic Test First Ar

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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
Hayward, California

Index Page (Home Page) for Level III NDT

+1 650-654-3601Website
Riverside, California

ND Testing provides certified NDT inspectors that are trained, experienced, and documented in their respective fields. We have a culture of improving our abilities and processes to provide you with fast turnaround and competitive pricing. At NDT, we�re committed to helping you meet project deadlines. We provide the results you need in a day or two, not a week or two. Because we care about our customers, the NDT team is committed to meeting or exceeding our client's expectations, requirements, and need

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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

Frequently Asked Questions

What NDT certifications are required for aerospace inspection in California?
Aerospace NDT in California typically requires Nadcap accreditation for the specific NDT methods being performed — particularly RT, UT, MT, PT, and ET. Individual technicians should hold NAS 410 or ASNT Level II/III certification. Many prime contractors and Tier 1 suppliers require technicians to be qualified under the customer's specific written practice, not just a general standard. ITAR registration may also be required for defense programs.
Do California NDT companies serve both aerospace and industrial clients?
Many larger California NDT companies serve both sectors, but it is common for companies to specialize. Aerospace NDT labs often focus exclusively on flight hardware and maintain Nadcap accreditation, while industrial inspection companies focus on API work, in-service inspection, and structural assessment. When sourcing, confirm that the company's written practice, certifications, and equipment are qualified for your specific application — aerospace and industrial procedures are governed by different codes and standards.
How do I find a Nadcap-accredited NDT company in California?
The Performance Review Institute (PRI) maintains the official Nadcap accredited supplier database at pri-network.com. You can search by commodity (NDT), country, and state to find currently accredited California companies. Nadcap accreditation is commodity-specific — confirm the accreditation covers the NDT method (RT, UT, MT, PT, ET, etc.) you require for your parts, not just a general NDT accreditation.

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