Joke Collection Website - News headlines - Is it better to connect the lightning rod with the roof by cold galvanizing or hot galvanizing?
Is it better to connect the lightning rod with the roof by cold galvanizing or hot galvanizing?
Hot dip galvanizing.
1. Hot dip galvanizing can burn off the residual oil on the surface through a flame-heated preheating furnace, and at the same time form an iron oxide film on the surface to improve the white rust resistance; Cold galvanizing is not heated by flame, and its strength and heat resistance are not as good as hot galvanizing.
2. The hot-dip galvanized surface is beautiful, with a block or leaf-shaped coating crystal pattern, and the coating is firm, with excellent atmospheric corrosion resistance; The cold galvanized surface is dented and the coating is fragile. From the above comparison, it is best to use hot dip galvanizing for the connection of roof lightning rods.
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