12197 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.

1475 verified suppliers found

El Monte, California4.6(7)

Dedicated to the highest standards of accuracy and precision

+1 626-444-7026Website
Ventura, California5.0(3)

Precision CNC machining services in Ventura, CA. IDeal Machining LLC offers custom milling and turning with a focus on quality and dependability. Contact us today.

+1 805-701-3795Website
Santa Ana, California

9100 (9001:2015) certified. Certification body: Perry Johnson Registrars, Inc.. Structure: Single Site.

(498) 039-2156Website
Santa Ana, California

9100 (9001:2015) certified. Certification body: Perry Johnson Registrars, Inc.. Structure: Single Site.

(209) 424-1754Website
Murrieta, California

9100 (9001:2015) certified. Certification body: Preferred Registrar Group. Structure: Single Site.

Burbank, California5.0(9)

Experienced machine shop, specializing in prototypes and production runs executed to tight tolerances for clients in Aerospace, Medical, and Industrial fields.

+1 818-601-1544Website
Bakersfield, California5.0(1)

MACHINE SHOP INDUSTRIAL EQUIPMENT BAKERSFIELD MACHINE AESSEAL MECHANICAL SEAL PUMPS CENTRIFUGES GEARBOXES VALVES COMPANY INDUSTRIES

+1 661-374-8761Website
Santa Ana, California3.4(5)

Explore precision molds, dies, jigs, and fixtures from Industrial Tool & Die, Inc. Serving Southern California since 1967. Contact us for custom tooling!

+1 714-549-1686Website
North Hollywood, California

inlinemfg.com

+1 818-285-8578Website
Fresno, California5.0(2)

RESPONSIVE SERVICE TO YOUR FABRICATION & MACHINING NEEDS. AT INNOVATION ALLEY WE HAVE THE LATEST EQUIPMENT AND THE SKILLED CRAFTSMAN NEEDED TO PRODUCE QUALITY WORK FINISHED TO EXACT STANDARDS.

+1 559-453-6974Website
Yuba City, California5.0(2)

Our all-in-one facility allows us to handle to design, machine and fabricate your projects in-house so that we can deliver your products to you faster and minimize expensive down time.

+1 530-755-0132Website
North Hollywood, California

9120 (9001:2015) certified. Certification body: Aviation Suppliers Association dba ASACB. Structure: Single Site.

(818) 232-7966Website

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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