Fashewar Shenhai-Hujja
Amfani yana da mahimmanci. Manual ɗin Ƙirƙirar Rarraba Wutar Lantarki na Masana'antu da Jama'a (3rd Edition) a shafi 489 ƙayyade: A cikin mahalli masu ƙura mai fashewa, aikin wayoyi masu rufe fuska ko robobi don shigar da fallasa haramun ne.
Abubuwan da aka ba da shawarar su ne bututun ƙarfe na galvanized, yawanci ana amfani da shi a cikin jigilar ruwa mara ƙarfi. Dole ne waɗannan bututun su bi ka'idodin tabbatar da fashewa, yawanci yana buƙatar ƙaramin kauri na bango na 2mm.