Zafi-tsoma a waje hannu na waje

Rommitar tsoma baki na waje hannu na waje na yanki mai haske zai sha maganin anti-lalata a farfajiya da ciki da waje da gaci an yi birgima kuma a waje. Za a rufe farfajiya da mai tsayayya da ciwon ciki don yin zuc mai tsayayye don dam ya hana baƙin ƙarfe. Froma mai zafi galvanized hanya ce ta maganin anti-lalata don karfe. Tsarin da aka girka galvanizing wanda ya shafi yin tsaftace sandunan layin fitilar da aka sarrafa, wanda aka bushe, a cikin maganin zinc na karfe, don haka yana haɗa kariya ta karfe, don haka samar da kariya ta ƙwanƙwasa. Kauri daga cikin Layer Layer yawanci sama da 75 μ m, yana sa fitilar yakan sanya fitilar-resistant ga fiye da shekaru 30.