Feem ntau hais lus, lawv tau muab faib ua ke rau cov khoom muaj peev xwm: lub teeb txee: cov txee (300 ~1000kg), hluav taws xob nruab nrab (1000 ~ 1500 kg Cov txee qis (hauv qab no 5m), txee rau siab (5 ~ 12 ~ 12), thiab cov txee super siab (siab dua 12m).
Lub teeb txee feem ntau muaj lub peev xwm loj dua thiab tsim nyog rau khaws cov khoom lag luam, me me, xws li cov khoom seem, chaw sau khoom, thiab cov khaub ncaws. Lub teeb txee feem ntau yog ua los ntawm cov phiaj txias-rolled steel, nrog cov qauv yooj yim, kev teeb tsa yooj yim, thiab cov nqi qis. Cov thauj khoom-cov kabmob muaj cov rooj hluav taws xob ntawm lub teeb yog li 100 ~ 300 kg ib txheej.
Nruab nrab txee muaj lub peev xwm loj dua li cov khoom siv hluav taws xob, xws li cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob ntau dua li cov khoom siv hluav taws xob hauv nruab nrab, uas yuav tsum tau muab cov vaj tse nruab nrab rau nruab. Cov load-cov kabmob muaj cov txee nruab nrab yog nruab nrab ntawm 300 ~ 1000kg ib txheej.
Hnyav-lub luag haujlwm-nqa khoom-coj tau muaj peev xwm, xws li cov khoom siv hnyav, uas xav tau kev sib sau ua ke rau nruab, thiab yog kim. Cov thauj khoom-cov kabmob muaj cov khoom siv hnyav-cov khoom siv hnyav yog nruab nrab ntawm 1000 ~ 1500kg ib txheej.
