Motlakase oa Boima ba Pipe ea Marang-rang
Morero oa tlhahlobo ea matla a lipeipi tsa enjene ea Aerospace o sebelisa mochini oa rona oa ho lekanya boima ba Rockwell.
tester ea hardness tester ea Rockwell hardness tester, Brinell hardness tester, Vickers hardness tester
