Maƙallin
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Maƙallin bakin ƙarfe mai ƙarfi na galvanized Angle mai zafi
Ana ɗaukar tallafin da aka tallafa kai tsaye a kan ginshiƙin simintin da aka ƙarfafa yawanci, wanda yawanci yana ɗaukar 1/5 ~ 1/10 na tsawon. Tsawon internode na tallafin gabaɗaya shine 2m ko 3m.