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