1. Txoj kab uas hla ntawm lub log sib tsoo chuck yuav tsum tsis pub tsawg tshaj ib -peb ntawm txoj kab uas hla ntawm lub log sib tsoo. Txoj kab uas hla ntawm lub log sib tsoo chuck siv rau kev txiav cov log sib tsoo yuav tsum tsis pub tsawg tshaj li ib -quarter ntawm txoj kab uas hla ntawm lub log sib tsoo.
2. Rau txhua hom kev sib tsoo log chuck, lub diameters ntawm sab laug thiab sab xis thiab qhov dav radial ntawm lub clamping nto yuav tsum sib npaug.
3. Txhua qhov chaw ntawm lub log sib tsoo chuck yuav tsum du thiab tsis muaj cov npoo ntse, thiab zoo - sib npaug.
4. Txhua qhov kev sib hloov ntawm cov tshuab sib tsoo, xws li kev sib tsoo lub log, lub cev muaj zog, rub, thiab lub taub hau ua haujlwm, yuav tsum tau nruab nrog cov npog tiv thaiv. Cov npog tiv thaiv yuav tsum ruaj khov, thiab lawv qhov kev sib txuas lub zog yuav tsum tsis txhob tsawg dua lub zog ntawm lub npog tiv thaiv nws tus kheej.
