Test Lab, NDT Weld Training Course Institute India Bangalore | Trinity NDT

Ultrasonic Testing(UT) Services Lab in Bangalore, India

NABL ISO17025 accredited. ultrasonic Thickness Gauging of Chimneys for Corrosion.

Welds, Castings, Forgings & Plates. Ultrasonic Flaw Detection, Since 2001. 1500+ Customers.

Discover top-notch Ultrasonic inspection services. NABL accredited labs. Affordable pricing. Onsite UT services in Hosur, Mysore. ASNT Level III, ISO9712 certified inspectors.

Ultrasonic Flaw Detection. Rely on Our Trusted Services

NABL and NADCAP Accredited Lab ISO17025
NABL & NADCAP Accredited NDT Labs in Bangalore India

Ultrasonic Testing (UT) is an one of the effective NDT method for detecting internal flaws in materials. UT can be applied for metals, non-metals. Such as Composites, Ceramics, Glass, Granite, Plastics. Trinity NDT Labs at Bangalore provides Ultrasonic testing services. NABL Accredited. Flaw detection, Ultrasonic wall thickness gauging for chimneys, pipelines for corrosion. Serves customers in Hosur, Mysore. Since 2001, quick, cost effective services. 1500+ customers across India.  

We have digital ultrasonic equipment, probes and calibration blocks. Specialized facility for Dry scan testing of composite materials available. Using through transmission technique. High temperature boiler tube thickness testing probes, expertise. ASNT Level III in-house experts. Inspectors with both ASNT, ISO9712 certifications to perform inspections onsite. NDT labs located at 4th Phase, Peenya Industrial Area, Bangalore. 

Facility for UT of forgings as per ASTM A388, Plates – ASTM E435, Castings – ASTM E709, Welds as per ASME Section V. Also, certified Level II inspectors, blocks for testing as per AWS, API and ISO standards. Aluminium, Magnesium components UT as per Aerospace standards.

UT testing has its applications in castings, forgings, plates, and welds. Essentially, material conducting ultrasonic sound can be subjected to this testing. Making it an incredibly versatile tool with minimal material limitations. Using angle beam probe technique, can detect surface, subsurface flaws. Advantage over other NDT methods is flaw depth, size can be measured. The method can detect, cracks, shrinkage, blow holes, lack of fusion, and slag inclusions.

Ultrasonic testing has evolved significantly, moving beyond basic techniques involving single or T-R probes. Advanced methods like Phase Array, TOFD, which employ multiple crystals.

Trinity NDT has complete facility for TOFD, Phased Array advanced Ultrasonic testing for testing of weld joints.


Ultrasonic Inspection of Castings

Ultrasonic inspection of Shaft
Ultrasonic inspection of Shaft for Flaw Detection

Ultrasonic inspection is an NDT method for detecting internal flaws in castings. Applied to wide range of casting materials such as steel, aluminium, magnesium alloy castings. This method proves effective for testing in as cast or heat treated condition. Helps in monitoring process control. 

UT can be employed for in-service inspections, allowing the detection of fatigue cracks, measurement of wall thickness, and estimation of corrosion damages.

When it comes to measuring wall thickness, Digital Ultrasonic Thickness Gauging (UTG) offers exceptional precision for chimneys, boiler pipes, tubes, tanks, and pressure vessels. Over the last two decades, UTG has become the preferred method, replacing traditional thickness gauging techniques for chimneys and boiler pipes. Its accuracy is unrivaled, with the ability to achieve measurements as precise as 0.001mm.

It’s important to note that the ultrasonic method may not detect cracks and flaws that run parallel to the beam, particularly those originating from the surface. For such surface-related cracks, alternative methods like Dye Penetrant Testing(PT)Magnetic Particle Testing(MT), or Eddy Current Testing(ET) are recommended.

Best practice often involves the use of both surface and internal NDT methods. Combining techniques like PT, MT, or ET for surface inspection with UT or RT for internal inspections enhances the overall detectability of flaws. This comprehensive approach ensures a higher level of quality control.

If you’re seeking UT inspection or thickness measuring services in Bangalore, Hosur or Mysore, Trinity NDT Labs is here to serve you. Have questions? Call us or reach out via WhatsApp for immediate assistance.

Reliable UT testing Service in Peenya, bangalore.

Discover Trinity NDT’s Ultrasonic Testing Labs conveniently located in the heart of Bangalore’s Peenya Industrial Hub. As the premier UT inspection labs in India, we proudly serve a vast clientele of over 1500+ satisfied customers in nearby cities like Hosur and Mysore. Our UT services hold NABL accreditation for both onsite and permanent facilities, aligning with ISO17025:2017 standards to ensure international-level quality and procedures.

At Trinity NDT, we specialize in providing ultrasonic inspection services for a diverse range of materials, including castings, forgings, plates, welds, and composites. As an ISO9001:2015 certified company, we guarantee the highest quality services for our valued customers. We’re equipped with cutting-edge dry scan techniques, ideal for scanning aerospace composite materials with precision.

Our UT testing teams are renowned for their rapid response, delivering services within just a few hours from the time of your inquiry via phone or email. Our team boasts well-experienced NDT Level 2 inspectors, and we have in-house ASNT Level 3 experts who oversee procedure approvals and technique development for various job requirements.

Experience the unmatched speed of our ultrasonic testing services right here in Bangalore. Join the ranks of our 1500+ satisfied customers across India and discover why Trinity NDT is your trusted partner for reliable inspection services.”

ISO17025:2017 NABL, Delhi Accredited Services for UT

Ultrasonic thickness Gauging of Pipe Lines
Ultrasonic thickness Gauging of Pipe Lines

At our Ultrasonic Testing Center, we pride ourselves on being NABL accredited lab. You can easily access the scope of our accreditation for a comprehensive overview of our NDT services. Our capabilities extend to providing dry scan UT testing specifically designed for aerospace composite materials. We invite you to visit our state-of-the-art Aerospace NDT Labs in Bengaluru, India today.

The quality of our Ultrasonic testing services is contingent upon both the quality of our equipment and the expertise of our inspectors. Our lab boasts a complete range of cutting-edge equipment, probes, cables, and calibration blocks. We exclusively utilize equipment that adheres to international standards, including ASME, ASTM, and ISO. Furthermore, we employ advanced techniques such as Distance Amplitude Correction (DAC) and Distance, Gain, Size (DGS) for accurate flaw sizing.

Dry scan UT testing stands as a specialized inspection technique tailored for aerospace composite materials. Additionally, we are actively working on incorporating immersion ultrasonic testing techniques to better serve our aerospace customers.

For a deeper understanding of our NABL accreditation and the scope of our Ultrasonic testing services, we encourage you to download our NABL ISO17025:2017 certificate and Scope documents to gain valuable insights into our commitment to quality and precision

Experienced UT Level 2 & ASNT Level 3 Experts

Quality of ultrasonic services depends skills of UT technicians. At Trinity NDT, we employ experienced NDT Level II inspectors. The labs are monitored by in-house ASNT NDT Level III expert for quality. Each testing, the NDT Level III reviews technique and guide the inspectors for applying suitable Ultrasonic testing procedures. Every inspector will undergo adequate on job training at ‘Trinity Institute of NDT technology.’


Ultrasonic testing Inspectors have exposure to testing of critical welds. Normal beam probes for base metal and angle beams used for weld scanning. Side Drilled holes (SDH) blocks helps to draw DAC for angle beam. Rely on our services for inspection of weld joints, plates, castings and forgings.


You can also use our NDT Level III consulting services such as preparing Ultrasonic test procedures. Contact us.


Independent UT Service Labs in Bangalore.
Serving 1500+ Customers in India.

An independent NDT agency for Ultrasonic testing in Bangalore. We also serve across India. Based on request, extending services for casting foundries. UT Level 2 inspectors are stationed near to you for quick services.

Portable A-scan UT equipment available for onsite testing. B-scan provides cross sectional and C-scan plan view. Techniques include normal, and angle beam. A facility for dry scan ultrasonic testing for inspection of aerospace composites.

Ultrasonic inspection of stainless steel is difficult due to coarse grains and heterogeneous structure. We use, probes with low frequency and larger diameter to test stainless steels. Services team has inspectors with experience in UT testing of stainless steels.


To ensure reliable test results, equipment are calibrated on daily basis. In house NDT Level III approves, checks the calibration status, procedures and acceptance criteria. We can do UT testing as per customer specific UT procedures.

UT facility is NABL accredited as per ISO17025:2017 standard. Customer specifically looking for NABL accredited Ultrasonic testing services in Bangalore can contact us or can use whats app chat on this page. Our response to your queries is lightening fast. Join our 1500+ satisfied customers.


Experienced Inspectors for Weld Ultrasonic Inspection

Welding is a process of joining metals permanently using heat and/or pressure. As per AWS, there are 5 types of weld joints. Butt, fillet, lap, corner and edge joints. Of these, butt weld joints are suitable for Ultrasonic testing.Whereas others are less effective to perform the testing.

Shear wave, angle beam ultrasonic scanning can detect lack of fusion, lack of penetration, slag and deep lying flaws. All welds and surfaces up to probe travel distance (called skip distance)are cleaned. This enables the probe to travel on the base metal surface smoothly. UT Inspectors will calculate skip distance and beam path distance using  UT formulae. He/she will perform, record, interpret and evaluate the welds for acceptance.

A team of NDT Level 2 technicians have all the skills needed for weld inspections. Experience in performing test under third party inspection. An NDT Level 3 from ASNT, for approving the results. Therefore, customers and third party agencies prefer us for our expertise in Weld Ultrasonic inspection as per ASME, AWS, EN and ISO codes and standards. Check the UT procedure and free download.


Aerospace Composite materials Dry Ultrasonic Scanning

Ultrasonic testing of aerospace composite
Ultrasonic testing of aerospace composite at UT Labs in Trinity NDT Bangalore India

Ultrasonic Inspection of aerospace materials is vital for ensuring safety of structures. Aluminium, Magnesium and Titanium components are tested using Ultrasonics to detects internal flaws. Level II technicians at Trinity NDT labs are trained to perform inspection of aerospace composite materials and metallic structures. Dry scan ultrasonic inspection is a preferred way of testing composites.

Special equipment is used for UT testing of composites. Ultrasonic waves can penetrate and can even find presence of foreign materials. The common defects found are De-laminations, voids, inclusions and cracks. Through transmission technique is a proven choice for scanning of aerospace composites. Range of calibration samples made of composites with artificial flaws are available at the center to set the UT equipment.

If you need UT of metals and composites contact us. In addition, we have FPI testing, Eddy Current testing MPI testing and Radiography X-ray labs. Check our NDT testing Services.

Onsite Ultrasonic Thickness Gauging of Chimney, Pipes

Ultrasonic thickness gauge corrosion measurement of chimney
Ultrasonic thickness gauge corrosion measurement of chimney pipe

Ultrasonic thickness testing stands out as a highly effective NDT method for precisely measuring the wall thickness of various components, including pipes, tubes, boiler components, and chimneys. UT machines excel at providing accurate measurements, with digital thickness gauging machines capable of achieving accuracy levels as fine as 0.1mm or even less. Probes designed for highly absorptive materials utilize lower frequencies and larger diameters to ensure optimal performance.

Notably, UT probes are not limited to room temperature applications; specialized probes are available for high-temperature scenarios, such as boiler and heat exchanger tube inspections during in-service maintenance. These probes are complemented by special high-temperature couplants, such as Silicone grease, which are suitable for elevated temperature environments.

For those seeking to expand their expertise, we offer the opportunity to learn and become certified in Ultrasonic thickness gauging, ensuring you can confidently and accurately perform these critical inspections

Boiler Inspector (IBR) Approved UT Services for Welds

We are an approved Ultrasonic Inspection services company as per IBR from Inspector of Boilers, Karnataka. This approval is for testing of Boiler drums, tubes and components. We also provide WPS Welder Qualification services with IBR Boiler Inspector approved documents. Do you need Digital Ultrasonic thickness testing of boiler components as per IBR or welding certification? Quickly, fill the details about your requirement today or Whats app us using live chat option at the end of this page. Experience our quick and high quality professional services.

Our Other NDT Services

How to Contact and Get the Quote/Price for UT Services?

Its simple, just a quick whats app message will serve. Our technical teams are fast and responsive. We understand your urgency. Ultrasonic testing services team is leading by a Technical Manger and an ASNT Level III experts.

All you need to do is send us your request. Forward details like component drawing, size, material, quantity, standard or specification if any.

Quickly Send us your request on whats app.

Knowledge Corner


In terms of safety and cost-effectiveness, UT testing is gradually supplanting Radiography or X-ray for weld inspections. Providing a more efficient and reliable alternative to RT.

It’s important to note that while humans can hear sounds in the range of 20Hz to 20KHz, UT testing employs high-frequency sound waves exceeding 20,000 Hz. Mechanical applications typically operate within the frequency range of 0.5MHz to 10MHz, while aerospace and other critical applications may require frequencies ranging from 10MHz to 25MHz. The choice of frequency depends on the desired sensitivity and the need to detect smaller flaws, with higher frequencies enabling finer flaw detection.

Though there many applications that use Ultrasonic principles, flaw detection, thickness gauging are prominent. Also ultrasonic principles have applications in cleaning, welding and material testing using high frequency probes. Other applications of includes,


  • Castings to detect shrinkage and internal defects
  • Forgings and Plates
  • Weld joints
  • Oil and Gas Pipelines
  • Tanks and Pressure vessels
  • In-service inspection plants and structures.
  • Wall thickness measurement using Digital Ultrasonic Gauge

There may be flaws in the raw materials, may result from fabrication and heat treatment, or may occur in service from fatigue, corrosion or other causes.



  • Detects internal defects
  • Measure depth of flaws
  • Accurate Flaw sizing
  • One side access using pulse echo technique
  • Pre-cleaning not as important as for other methods
  • Suitable for Metals and nonmetals
  • High speed of testing and fits for automation
  • No safety hazards
  • Suitable for much more than flaw detection
  • Portable equipment available for onsite inspections


International Codes and Standards for Ultrasonic Testing

Ultrasonic testing codes and Standards for common usage at center. Customers can choose any of the following based on the requirement. You can also use our ASNT Level III consultant services for establishing UT procedures and acceptance standard.

  • ASTM E 114 for Straight Beam UT testing
  • ASME Section V – Nondestructive Evaluation
  • ASTM A388 – Ultrasonic inspection of Heavy steel forgings
  • ASTM A609 – UT testing of Castings
  • AWS D1.1 – Structural Welding code, steel. 
  • ASTM E435 – Ultrasonic testing of steel plates using straight beam examination
  • ASTM A577 – UT testing of plates for special applications
  • AWS D1.2 – Structural Welding Code, Aluminium
  • ASTM A578 – Angle beam Ultrasonic testing of steel plates
  • ISO 11666 – Ultrasonic testing – Acceptance levels
  • ISO17640 – Nondestructive testing of Welds

Key Highlights

  1. NABL ISO17025:2017 Accreditation for NDT Services
  2. UT equipments with DGS, AVG, AWS flaw sizing for welds
  3. Range of probes for high temperature use
  4. UT technicians holds NDT Level II as per ASNT SNT TC 1A and ISO9712
  5. Experienced in house ASNT NDT Level III
  6. ASNT NDT Level III trainers for NDT Level 1, 2 courses on Ultrasonic testing.
  7. Above all, we have one of the largest NDT labs on Ultrasonic testing.
  8. Download Free Sample Ultrasonic inspection procedure


Enrol for UT Level I, II training with us.

Are you looking for Level 2 or Level 1 certification in Ultrasonic testing or Ultrasonic thickness gauging training course? Now, register online for next program. Find training dates from NDT training calendar page. Our courses are  offered as per ASNT SNT TC 1A and ISO9712 schemes. Know more the about course, schedule and other NDT training programs.

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