Lub tshuab dhos no ua tau raws li cov neeg siv khoom tshwj xeeb hauv kev lag luam roj av, geological, mining thiab tshuaj lom neeg kev lag luam, thiab hauv kev ua liaj ua teb irrigation thiab kua dej, nws muaj peev xwm txiav ntau yam ncaj thiab taper yeeb nkab threads ntawm lub koom haum sib koom tes, laum rods, casting kav, cov kav dej, zoo castings thiab warter twj tso kua mis muaj peev xwm txiav ntau yam kev lag luam thiab muaj txiaj ntsig zoo, piv nrog rau cov cav tov. metric, nrog tsim nyog thiab module threads, shafts thiab disks.
