2227 verified suppliers listed
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NDT Companies
Industrial NDT inspection technician

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Browse 500+ verified NDT inspection companies. Compare ASNT, API & Nadcap certifications. Request free quotes from certified UT, RT, MT, PT specialists.. Compare certifications, capabilities, and request quotes — all for free.

2227+

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51

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14

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2227 suppliers found

Square One Home Inspections, LLC. - Home Inspections and Radon/Water Testing
Brunswick, Maine5.0(773)
(207) 560-3222Website
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St. Louis Component Repair & NDT LLC.
Chesterfield, Missouri5.0(4)
+1 636-778-9999Website
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Standard Mechanics, LLC
Starkville, Mississippi
(662) 546-1565Website
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Standard Testing and Engineering Company
Oklahoma City, Oklahoma4.6(21)
(405) 528-0541Website
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STANLEY Inspection
Berthoud, Colorado
(918) 347-3130Website
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STANLEY Inspection HQ
Tulsa, Oklahoma3.7(6)
(918) 439-1300Website
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Star Sensor Services
Dubuque, Iowa
(563) 663-1115
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Steel City NDT LLC
Monroeville, Pennsylvania5.0(15)

Discover Steel City NDT, offering reliable non-destructive testing services for quality assurance in steel and metal industries.

CWI (AWS)ISO 9001
+1 724-212-7322Website
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Sterling Inspection LLC
Signal Hill, California5.0(1)
(714) 795-6998Website
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STIM Services
Broussard, Louisiana3.0(1)
(337) 606-0165Website
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Stopa Quality NDT Services LLC
Colchester, Connecticut
+1 860-537-2814
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Structural Diagnostics Inc
Camarillo, California5.0(3)
(805) 987-7755Website
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Structural Engineering & Inspections, LLC
Franklin, Tennessee4.6(34)
(615) 819-0029Website
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Structural Hawaii Inc
Pearl City, Hawaii2.3(3)
(808) 488-5000Website
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Structural Inpections LLC
Omaha, Nebraska
(402) 493-4601
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Structural Radar Imaging, Inc.
Renton, Washington5.0(3)
(253) 796-5637Website
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Structural Testing Systems
Ronkonkoma, New York
(631) 737-0826Website
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STS NDT, LLC
San Antonio, Texas3.0(2)

Discover STS Aviation Group's extensive Aircraft MRO Services, offering nose-to-tail maintenance, repair, and overhaul solutions tailored to keep your fleet operational and efficient. Learn more today!

+1 844-266-3324Website
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Sub Source Inc
Rockford, Illinois3.4(7)
(815) 968-7800Website
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SubSea NDT
Anchorage, Alaska

"Welcome to SUBSEA NDT & Engineering, your partner in Advanced NDT solutions. We deliver precision inspection, innovative technology, and expert consulting to ensure asset integrity and safety across industries."

+1 401-308-3105Website
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Browse by Certification

API 1104API 510API 570API 653ASMEASNT Level IIASNT Level IIICWI (AWS)ISO 17025ISO 9001Nadcap NDTNAS 410Nuclear NQA-1SNT-TC-1A

Browse by Industry

Aerospace & DefenseConstructionInfrastructureManufacturingMarineMiningNuclearOil & GasPetrochemicalPipelinePower Generation

Top Cities for NDT Companies

Los Angeles, CAChicago, ILHouston, TXPhoenix, AZPhiladelphia, PASan Antonio, TXSan Diego, CADallas, TXSan Jose, CAFort Worth, TXJacksonville, FLColumbus, OHIndianapolis, INCharlotte, NCSan Francisco, CASeattle, WADenver, CONashville, TNEl Paso, TXOklahoma City, OKPortland, ORDetroit, MIMemphis, TNLouisville, KYMilwaukee, WIAlbuquerque, NMTucson, AZKansas City, MOAtlanta, GAOmaha, NE

Frequently Asked Questions

How do I choose the right NDT inspection company?
Start by identifying your project requirements: Verify ASNT Level II/III personnel certifications are current. Confirm they have experience with your specific NDT method. Check insurance and safety records for field work. Ask about equipment calibration and reporting standards. Our directory lets you compare NDT inspection companies side by side, filter by certifications and location, and request quotes from multiple suppliers at once — all for free.
What certifications should I look for in a NDT inspection company?
The most important certifications depend on your industry. Common ones include ASNT Level III (NDT expert), API 510/570/653 (pressure equipment), ISO 17025 (lab accreditation), Nadcap NDT (aerospace), CWI (welding inspection). Use our certification filter to find suppliers that meet your specific quality requirements.
How much does it cost to work with a NDT inspection company?
Pricing varies based on several factors: NDT method required, number of test locations, accessibility of the inspection area, certification requirements, urgency and scheduling. The best approach is to request quotes from multiple qualified suppliers through our free RFQ system to compare pricing and lead times.
Can I request quotes from multiple NDT inspection companies at once?
Yes. Our multi-supplier RFQ system lets you select up to 10 NDT inspection companies and submit a single quote request. Each selected supplier receives your project details and can respond with a quote. This saves you time and helps you compare offers.
What is the typical lead time for NDT inspection companies?
Most NDT companies can mobilize field technicians within 1–5 business days. Turnaround and shutdown support may require advance scheduling of 2–4 weeks. Lab-based testing typically takes 3–7 business days.

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