Qws zeb yog roughly tib yam li pob zeb, tab sis muaj peb qho txawv txav:
1. Lub pas nrig zeb siv feem ntau siv cov hlau phom ntawm 50-100mm raws li qhov nruab nrab, thiab pob zeb siv pob steel siv ua cov pob zeb. Qhov ntev ntawm cov pas nrig yog 25 mus rau 50 hli luv tshaj lub cev ntsig, lub pas ntawm cov pas nrig yog 35% mus rau 45% ntawm qhov ntim zoo ntawm lub pas nrig zeb. Nrog lub qhov muag liab qab, kab sab tav ntawm lub pas nrig yog li 100-200 hli hauv qab ntawm qhov chaw kab ntawm qhov chim.
2. Qhov piv ntawm qhov ntev mus rau lub cheeb ntawm pas nrig zeb yog 1.5 mus 2.0. Tsis tas li ntawd, lub sab hauv ntawm cov phom liner ntawm lub kawg cap yuav tsum yog ntsug dav hlau. Lub hom phiaj yog los tiv thaiv thiab txo cov kev tsis zoo, kev khoov thiab tawg ntawm lub pas nrig hlau, los xyuas kom meej tias cov hlau pas tau qhov kev txav mus los. Qhov laj kab ntawm lub cylinder ntev mus rau lub cheeb ntawm pob zeb yog me me, feem ntau qhov ratio tsuas yog me ntsis loj dua 1.
3. Cov pas nrig tsis siv daim phiaj txhuam rau cov kua hluav taws xob, es tsis yog hom phom thiab hom qhib. Cov kev sib hloov ntawm kev sib tsoo ntawm txoj kev zeb yog qhov qis tshaj qhov ntawm pob yuav tsum yog tib qho kev qhia tshwj xeeb, yog li qhov nruab nrab hauv txua zeb yog nyob hauv lub xeev tawm.
