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
G&H Precision is a leading manufacturer of complex, precision components for a wide range of industries, including, but not limited to, the aerospace, defense, oil, nuclear, & energy industries.
9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.
Galvin Precision is a one-stop shop for high precision machined metal and plastic parts. Our technical knowledge and vast equipment and capabilities allow us to handle an array of projects from prototypes and unusual part tolerances to large run standard productions. We have secondary services such as welding, part assembly, powder coating and plating for ship to stock convenience. Whether a job requires 1 part or 10,000 parts, we assure consistent quality performance and on time delivery. We ma
Precision CNC Machining Services: Serving Southern CA Since 1974: CNC Milling Services, CNC Turning Services, Metal Fabrication, Mechanical Assembly Services.
9100 (9001:2015) certified. Certification body: NSF International Strategic Registrations, Ltd.. Structure: Single Site.
9100 (9001:2015) certified. Certification body: IAPMO SCB. Structure: Single Site.
9120 (9001:2015) certified. Certification body: ABS Quality Evaluations, Inc.. Structure: Single Site.








