Lub tshuab no yog cov khoom lag luam tsim raws li qhov xav tau ntawm lub cev muaj zog, valve, twj tso kua mis, cov kabmob, tsheb thiab lwm yam lag luam.Lub tshuab no yog tsim rau kev ntxhib thiab ua tiav ntawm cov cylindrical sab hauv thiab sab nrauv, lub ntsej muag kawg, grooves, thiab lwm yam ntawm ferrous hlau, non-ferrous hlau thiab qee qhov tsis yog xim hlau nrog high-speed steel thiab hardware alloy cov cuab yeej.