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2. Climate Considerations In areas with significant temperature fluctuations, the thermal expansion and contraction of metal roofing can affect the choice of panel width. Larger sheets may expand and contract differently than smaller ones, impacting the roof’s performance.
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1. Hot-Dip Galvanizing This method entails cleaning the iron or steel surface and then immersing it in a bath of molten zinc at approximately 450 degrees Celsius. Once coated, the metal is removed and allowed to cool, resulting in a thick, adherent zinc layer that forms various compounds with the underlying iron. This method is known for producing robust coatings suitable for heavy-duty applications.
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4. Market Demand The demand for galvanized iron sheets varies across different sectors, such as construction, automotive, and appliances. Economic growth can lead to increased construction activity and higher demand for roofing materials, consequently driving prices up. Conversely, during economic downturns, demand may decline, leading to price reductions as factories seek to maintain sales.
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