Don yawancin kayan aikin zafi, don ajiye ƙarfin lantarki da haɓaka yanayin aiki, adana zafi ya zama dole {{{{{{{{{{{{{{{0}
Za'a iya raba tubalin rufi zuwa nau'ikan masu zuwa:
1) Rushewar yumɓu maimaitawa tubali GB / t {{1}
2) tubalin alumina high
3) Mulite rufin bulo
Ka'idojin zabar rufin rufin sun hada da:
1) Bai kamata ya shafi rayuwar sabis na dukkan Masonry ba;
2) Don ci gaba da yawan aikin zafi na kayan zafi, gaba ɗaya adana zafi shine babban rashi na zamani {{4} rufi na iya ƙara zafin jiki na masonry da ƙara yawan farfadowa Hasashe {6} Saboda haka, ya kamata a ɗauka na wutar lantarki na yau da kullun bayan lissafin zafi da zafin rana {7}
3) Saboda babban mamaki na informing tubalin, ba za su iya ɗaukar nauyin wuce kima ba kuma bai kamata kai tsaye tuntuɓar ƙarfe na ƙarfe ba, slag da ƙura mai zafi {2}
4) The rufin tubalin suna da karancin ƙarfin {{1} encassion ya kamata a kula da lalacewa ta hanyar fadada mashin ya kamata a hangi karfi da ƙarfi na ƙasa, tasiri da rikici;
5) Tunda rufin sharaɗin zafi yana da babban kayan maye bayan samarwa, matsakaicin aikin zafin jiki ya zama ƙasa da digiri 100 fiye da yawan zafin iska {{2}
