I-Automatic Online Pipe Hardness Tester
Umbhobho we-injini ye-aerospace yobulukhuni beprojekthi yovavanyo lwe-intanethi usebenzisa umvavanyi wobulukhuni be-Rockwell.
Iseti ezipheleleyo zomvavanyi wobulukhuni baseRockwell, umvavanyi wobulukhuni bukaBrinell, umvavanyi wobulukhuni beVickers
