Ultrasonic Flaw Detector
YUSHI Instruments:Leading Innovation in NDT Instruments
Yushi Instruments is a high-tech R&D-centered enterprise dedicated to providing high-quality ultrasonic testing (UT) equipment to the world. The company was founded in 1985 (formerly known as Shenyang Flaw Detection Machine Factory) and officially established in 2011. After more than a decade of dedicated innovation, we have grown to become a leader in China's non-destructive testing (NDT) industry. Our award-winning, multi-patented products such as the 2024 PM5 Gen2 and 2025 PM5 Gen3 Ultrasonic Thickness Gauge have received national patents and international certifications, fully reflecting our commitment to excellence.
YUSHI now has developed 8 categories of NDT products:
| Ultrasonic Thickness Gauge | Ultrasonic Flaw Detector |
| Ultrasonic Pulse Generator and Receiver | Coating Thickness Gauge |
| LEEB Hardness Tester | Industrial LED Film Viewer |
| Black and White Densitometer | UV NDT Lamp |
Why Choose YUSHI?
We offer a variety of precise testing instruments.
Keep Technical Innovation
Rich experience of R&D and strong abilities drive the development of ultrasonic thickness solutions like the PM5 Gen2 and PM5 Gen3.
Customer's Requirement Oriented
We listen the real requirements from our all customers, from end users to distributors,treating every need with equal importance.
Customized Solution
We offer customized instruments and accessories based on our clients' specific needs.
Throughtful Service
Our commitment extends far beyond delivery, encompassing vital after-sales services including maintenance, calibration, and software updates.

Precision Localization:Industrial Ultrasonic Flaw Detection
Working Principle
Ultrasonic flaw detection utilizes high-frequency ultrasonic sound waves, which are typically 0.5-20Mhz, beyond the range that humans can hear.The elements transmit the ultrasound into the tested material via the couplant.The propagation path and diffraction of ultrasound can effectively indicate the internal structure of materials.
- Reflection: When encountering interfaces between materials such as cracks, voids, inclusions, or back walls, a portion of the sound wave will be reflected back to the probe.
- Transmission/Refraction: The remaining energy continues to exist and may reflect from deeper interfaces.
- Detection: Sensors act as receivers, converting reflected echoes back into electrical signals.
Overview of YUSHI YUT Series Ultrasonic Flaw Detectors
YUT Series ultrasonic flaw detectors provide inspectors with advanced ultrasonic testing solutions. These types of flaw detectors are designed for detection accuracy,durability and user-friendly efficiency. These instruments represents the professional R&D ability of YUSHI Instruments in ultrasonic testing and NDT industries. And they combine the cutting-edge technology with practical real detection. In YUT series, there are YUT-2600,YUT-2620,YUT-2800 and YUT-2820.
Core Technology of YUT series
Flexible Ultrasonic Pulse Control
- Adjustable Ultrasonic Pulse:50V-400V
- Selectable Pulse width:25ns-1000ns
- Variable damping:33Ω/50Ω/100Ω/500Ω
- Selectable brand fignal Filter:1-4Mhz/0.5-15Mhz
Powerful Detection Localization
- DAC and AVG Curve(AVG only for YUT-2620,YUT-2820)
- 2 Independent Gates,monitoring the echo amplitude and the sound path distance
- Weak Peak Memory:Record the highest waveform for the fast detection.
Intelligent Paraments Setting
- Automatic Gain Control:Adjust the highest echo to an user-defined range(20%-80%)
- Echo to Echo Thickness Measurement
- Real-time Parameter Display:Display the Gain,Velocity,Depth,etc
- Digital Rejection
Data Management
- Large Storage:Save 1000 sets of datas,including waveforms and curves
- RS232 Data Communication:YUT series support to transfer the data to the PC using RS232 interface.
Benefits of Ultrasonic Flaw Detector
Designed to locate and measure discontinuities
Unlike other flaw detectors that can only identify the presence of defects, ultrasonic flaw detectors can identify and give the estimated size of the specific defect.
Some of the common defects in materials include; corrosion, voids, leaks, sealant disbonds, dents, cracks (surface and subsurface), and defects in weld bonds. Moreover, ultrasonic flaw detectors can be used for both ferrous and non-ferrous materials and can be used for testing very thick components with the same efficiency as thin materials.
Ideal for versatile application
Ultrasonic flaw detection uses the principles of straight beam and angle beam inspections to give the size and location of a flaw on the surface or inside of a test material.
Because of this, ultrasonic flaw detectors have found use in a wide range of applications in production and service industries especially where metal and welded structures are used. Examples of these industries are, infrastructure; where it is used to monitor for corrosion in metal structures such as bridges and other metal building parts. In the petroleum and oil industries, ultrasonic flaw detectors are used to check for leaks and wall thickness of pressure vessels, pipes and tanks.
Quick to get precise results
The working principles of the ultrasonic flaw detector, together with the use of the proper transducers for different materials results in the instrument giving fast and accurate results. Most ultrasonic flaw detectors work at a high frequency of up to 15MHz, making them faster and more accurate than other instruments.
Equipped with specialized software for sizing defects
Ultrasonic flaw detectors come with inbuilt software that uses the various sizing techniques and flaw detection techniques to give a complete scanning report to the technician. It saves you the time and effort of doing manual calculations.
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FAQ
We're well-known as one of the leading ultrasonic flaw detector manufacturers and suppliers in China. Please feel free to buy high quality ultrasonic flaw detector for sale here from our factory. Contact us for more details.
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