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

Newbury Park, California5.0(1)

DANGAR is a CNC machine shop offering precision cnc 5-axis machining, Reverse Engineering services, CNC machining of production to short runs parts, welding, tool design, inspection and milling services. Newbury Pk California ~ 805-376-2974. We offer machine shop services to the aerospace, automotive, medical, dental, defense, computer, electronics and petrochemical industries. Our services include the design, fabrication and manufacturing of precision parts and tooling. Our cmm inspection

+1 805-376-2974Website
Ventura, California

Dangar Engineering & Mfg. offers a wide range of capabilities in CNC machining and precision machining. We have been providing industries with quality CNC machined parts since 1989, and we continue to provide services to such industries as aerospace, automotive, medical and marine.

805-376-2974Website
Ventura, California

DANGAR is a CNC machine shop offering precision cnc 5-axis machining, Reverse Engineering services, CNC machining of production to short runs parts, welding, tool design, inspection and milling services. Newbury Pk California ~ 805-376-2974. We offer machine shop services to the aerospace, automotive, medical, dental, defense, computer, electronics and petrochemical industries. Our services include the design, fabrication and manufacturing of precision parts and tooling. Our cmm inspection

+1 805-376-2974Website
Poway, California5.0(4)

Our machine shop in San Diego, CA can help you get the machinery expertise you need to get your factory up and running. Get in touch with us here.

+1 858-679-3970Website
Meridian, California4.4(8)

Davis Machine Shop, Inc. is your resource for custom manufacturing in the agricultural and industrial industries. Contact us at 530-696-2576 today!

+1 530-696-2576Website
Fremont, California

9100 (9001:2015) certified. Certification body: BSI Group America Inc. Structure: Single Site.

(833) 333-3333Website
Van Nuys, California

9100 (9001:2015) certified. Certification body: Performance Review Institute Registrar. Structure: Single Site.

Santa Ana, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

(575) 571-1980Website
Rancho Cucamonga, California

9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.

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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