On October 1-4, 2023 OKOndt GROUP attended Railway Interchange 2023 - the largest North American railway event. This time the exhibition took place in Indianapolis, Indiana, USA (Indiana Convention Center) and brought together over 700 exhibitors and more than 8, 000 visitors who are the major influencers in the industry. Thank you to everyone who was with us at the RI 2023!


OKOndt GROUP has a vast experience in production of flaw detectors of different types – ultrasonic, eddy-current and electromagnetic acoustic. There is also a large spectrum of ndt equipment for sale to meet the requirements of automated testing. Ndt products for automated testing are highly sophisticated means that can solve specific tasks of ndt inspection during manufacturing of prefabricated components and parts. The systems for automated testing are mainly composed by specialized multiple flaw detectors combined with a set of other NDT tools. Ultrasonic flaw machines are intended for non-destructive testing of products for the presence of defects such as discontinuity and inhomogeneity of material in raw stock, finished items, in-process goods, welded, soldered, bolted, riveted and other joints. Also, ultrasonic flaw detectors can be used for solving additional testing tasks, such as measurement of thickness, assessment of sound velocity in various materials, etc.





Ultrasonic testing

Ultrasonic testing


Eddy-current testing

Eddy-current testing


Automated testing

Automated testing


Electromagnetic acoustic testing

Electromagnetic acoustic testing




Ultrasonic thickness gauges are ndt tools that utilize the same principles as UT flaw detectors, but serve only for estimating thicknesses of components and parts, and calculating sound velocities in them. Eddy-current flaw detectors are used for testing parts and components for the presence of surface or subsurface defects, such as discontinuity of the material (cracks, overlaps, holes, fine cracks, etc.) by utilizing eddy current technique. Each set of non-destructive testing devices - be it purposed for testing of either longitudinal pipes or railcar axles or aircraft parts, is a flaw detector backed up by a kit of ndt testing equipment, which enables the basic flaw detector to handle any specialized task or to perform universal flaw detection. So, buying a flaw detector from OKOndt GROUP means getting a pre-assembled set of non-destructive test equipment, which consists of a variety of transducers, cables, calibration blocks for different applications. Our multi-purpose ndt machines allows solving a wide range of testing tasks. Besides, OKOndt GROUP performs ndt equipment sales, with a possibility to adjust the purchased product to specific customer’s needs.




The system is intended for the magnetic particle inspection of 55 dimension types of the rail transport 650-1300 mm diameter wheels for the surface and subsurface defects in any direction on all wheel surfaces, except for the hub inner hole surface.The system reset for the wheel specific dimension type is carried out for 30 min. The system is set up for the certain dimension type of the testing wheel by resetting the gibs in direction of the wheel, wheel oiling system, magnetization system and IF illumination system movement.

UMPK-1 is a semi-automated system with advanced technologies which make it possible to perform qualitative testing of the rail transport wheels by the magnetic and luminescent technique. The guaranteed testing efficiency – no less than 40 wheels per hour as long as the wheels are continuously loaded to the testing site. The wheel testing time without taking into account the time of loading-unloading on the testing site - no more than 1,5 min. The system can operate as an independent unit or can be integrated in the existing manufacturing lines of the customers' enterprises.

The system assures detection of the surface defects with the minimal conditional length 2 mm – on the finishing surface and 6 mm – on the roughly machined one (re-machined surfaces), such as "crack" of any direction with the opening width no less than 25 µm.

Main specifications:

  • Wheel magnetic particle inspection techniques are performed in compliance with:
  1. GOST 21105 "Non-destructive testing. Magnetic particle technique".
  2. ISO 6933.
  3. PrEN 13262.
  4. DIN EN ISO – 9934 – 1,2,3.
  5. AAR M 107.
  • testing of 55 dimension types wheels with the diameter from 650 to 1300 mm;
  • system reset time for another dimension type – no more than 30 min.;
  • wheel testing time – no more than 1,5 min.;
  • testing efficiency: 40 wheels per hour;
  • testing results documentation;
  • possibility to integrate video surveillance system for remote control of the testing process.

 The system carries out semi-automated magnetic and luminescent inspection of 55 dimension types wheels with the diameter from 650 mm to 1300 mm and testing velocity up to 40 wheels per hour. The system meets the requirements of such normative documents on magnetic particle inspection as GOST 21105, PrEN 13262, ISO 6933, ААR M107, DIN EN ISO-9934-1,2,3. Sensitivity conditional level of "B" system magnetic particle inspection - according to GOST 21105.

UMPK -1 system of magnetic particle inspection of rail transport wheels

Structurally, "UMPK-1" system consists of the following component parts connected by one control system:

  1. Mechanical part.
  2. Computer system which, in its turn, consists of:
    • - operators remote controls;
    • - computing unit.
  • the system of preparation and oiling with magnetic and luminescent suspension;
  • wheel magnetization and demagnetization system;
  • UV illumination system.

  Main specifications of the system:

  1. Wheel magnetic particle inspection techniques are performed in compliance with:
  • GOST 21105 "Non-destructive testing. Magnetic particle technique";
  • ISO 6933;
  • PrEN 13262;
  • DIN EN ISO – 9934 – 1,2,3;
  • AAR M 107.
  • conditional sensitivity of "В" magnetic particle inspection according to GOST 21105;
  • detection of the surface defects with the minimal conditional length 2 mm and opening width no less than 25 µm;
  • testing of 55 dimension types wheels with the diameter from 650 to 1300 mm;
  • system reset time for another dimension type – no more than 30 min.;
  • wheel testing time – no more than 1,5 min.;
  • testing efficiency: 40 wheels per hour;
  • testing results documentation;
  • possibility to integrate video surveillance system for remote control of the testing process.