Thai Non - Destructive Testing Public Company Limited (TNDT) is a technical service company operating engineering safety inspection, testing and certifying for critical equipment in industrial sector by using non-destructive techniques (Non - destructive Testing - NDT). The NDT is the methods used to test a part or material without impairing its future usefulness. It is intended for detection and measurement of significant properties, in order to compare against to acceptance criteria of applicable code of such equipment, such as steel structure, pressure vessel, gas pipeline transmission ,etc., by means of using both tool and equipment based on scientific approaches, especially in the field of physics, radioactivity substances, electromagnetic field, ultrasonic wave and chemistry, etc.

For the inspection and certification, these are required to inspect pressure equipment so as to ensure the safety and suitability to continue servicing, by assessing damaged mechanism and its remaining service life. The inspection shall be performed by the personnel with qualifications and expertise according to international standards, regulations, and law. The services can be operated in all conditions and are available as Real-Time system, being on-site, during the production or assembly processes. The certification service will be performed after equipment construction completed, before operating. On the other hand, In-serviced inspection is always performed after equipment has been placed in operation, or required periodical inspection due to the damage mechanisms, such as mechanical damage inspection, as well as damage occurrence during operating condition of such equipment. The inspection is used to assist in the planning of maintenance schedules or Risk based inspection, etc. The services are normally depending on the customers or project owners’ requirements, on the legal regulations or standards which specified the usage of technology. Due to the customers or project owners are the entrepreneurs in industries with a high risk of accidents, while the business of service providers is involved in responsibilities for the safety of lives, property and environment, the precision and accuracy is of paramount importance in the testing and inspection reporting and certifying. Therefore, all the techniques concerned in this service must be up to internationally - accepted standards, legal requirements, ethical code of conduct, professional practices and corporate governance which have been strictly adhered.
Service Centers
- 1990
Moved the Head-office from NaNaNua to the Current Office, Head-office at 19 Soi Suanson 8, Ramkhamhaeng Road Huamark Sub-District, Bangkapi District , Bangkok 10240
- 1995
Branch Office 1 - Mabtaphut District, Rayong Province
- 1995
Site 1 LarnKraBue District, Kampaengphet Province
- 2000
Site 2 Sriracha District, Chonburi Province
- 2013
Site 3 SinghaNaKorn District, Songkla Province
- 2025
Branch Office 2 - Sterile Service Center, Nikhom Phatthana District, Rayong Province



















