barroosin is-qodista
Nidaamka barroosinka is-qodista wuxuu ka kooban yahay xadhig dun godan oo lagu rakibay birta u dhiganta si loo sameeyo qodista, barkinta iyo grouting hal go. injineernimada kale, oo si weyn loogu isticmaalo macdanta, tunnel, tareenka, tareenka dhulka hoostiisa mara iyo injineernimada kale.
An r-threaded bool, ama bool, barroosin, waa dun dunidu godan oo design a dusha of threads mawjadaha sida ISO 10208 iyo 1720.It markii ugu horeysay la hindisay Mai ee 1960 si loo dedejiyo dhismaha mashaariicda dhulka hoostiisa adag.It. weli waa caan adduunka oo dhan maanta.
Tilmaanta dunta: R25, R32, R38, R51, T76
Heerka dunta: ISO10208, ISO1720, iwm
