Regular spangle, also known as bright spangle, is produced by allowing the zinc to cool and crystallize normally without restriction forming a flower-like pattern on the surface about ¼” in diameter or smaller. This type of sheet is used for ductwork, pails, garbage cans, etc. Minimized or minimum spangle is produced by controlling the elements in the zinc bath, i.e. reducing heavy metals. The process not only restricts the diameter of the spangle but also reduces the profile or height of the spangle. Sheet coil produced with this surface is usually used for painted products.
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