OKOndt GROUP remains a reliable provider of high-quality non-destructive testing (NDT) solutions and services tailored to the needs of various industries. In May 2025, the company took part in the Railway Interchange exhibition in the USA, where it presented UT and ET rail testing Systems designed for railway track inspection under high-speed conditions with minimal traffic disruption.

Ultrasonic calibration blocks

  • Application

KMT-176 M2 Set of the Ultrasonic Plane-Parallel Thickness Standards (KUSOT-180) is designed for certification and primary checking of the contact ultrasonic thickness gauges at the manufacturing site with the thickness range of 0.6-300 mm in steel and 1-300 mm in duraluminum, as well as for the periodic verification of these thickness gauges.

  • Technical data

  • useful thickness range in 40X13 (40Cr13) steel at ultrasonic waves velocity of 6050±30 m/s is from 0.6 to 5.0 mm:
    • Δ = ± 0.7 % within the range of 0.6-5.0 mm
    • Δ = ± 0.4 % within the range of 6.0-10.0 mm
    • Δ = ± 0.3 % within the range of 12.0-300.0 mm.
  • net thickness range in D16T aluminum at ultrasonic waves velocity of 6300 ± 30 m/s is from 1.0 to 300.0 mm,
    • Δ = ± 0.7 % within the range of 1.0-5.0 mm
    • Δ = ± 0.4 % within the range of 6.0-10.0 mm
    • Δ = ± 0.3 % within the range of 12.0-300.0 mm

Physical values are generated in the UISU-01 type system for the ultrasound velocity measurement, an ultrasound velocity meter with the linear and angular measurement standard instrumentation.