Metal Galvanized Roofing Sheets is usually fabricated by galvanizing steel, copper, aluminum, brass and zinc. Metal Galvanized Roofing Sheet consists of galvanized steel, hot-dipped galvanized metal sheet and other metal strip, which are all rolled and cold formed into different corrugated shapes. They are known for their sturdiness and long life, and they provide an attractive look as well as durability. Based on the outdoor surface condition, they are divided into flat spangles, half moon spangle, light whole metal products and extra-large square or round products. Some products are also coated with polyester nha khung thep.
The galvanized roofing sheet has numerous advantages over other materials, but are prone to corrosion, shrinkage and wind loads. Resistance to wind and moisture increases with the square of the width and the height, while thermal resistance decreases with increasing height. High mechanical strength is required to lift the roof sheathing off the building. Theoretically, it should withstand all weather conditions, including sun, rain and snow. When it comes to tests, this particular metal is usually rated for abrasion only. Some metal products are classified in the category of Alloys, due to some properties of the metal which are not present in alloys.
The resistance to corrosion is much less for metal galvanized roofing sheet than for steel sheet. When both are tested at the same time, it shows that galvanized corrugated sheet beats steel in the theoretical weight. The differences in thermal conductivity and electrical resistance are insignificant when comparing these two metals.
It is believed that galvanized steel sheets are more durable than steel in cold climates. This means that they are better suitable for outdoor use. Moreover, steel sheet is more susceptible to corrosion under high temperatures. Under such condition, the metal galvanized roofing sheet would a more appropriate choice as it is not vulnerable to breakdown. Also, it is much easier to repair galvanized steel sheets rather than welding or painting it.
Metal galvanized sheet is easy to maintain and does not attract external elements. This makes it ideal for outdoor use. Its non-corrosive property makes it more suitable for applications where there is frequent contact with water. Further, these sheets can be easily re-stretched and fitted for installation without additional expenses.
A metal roofing sheet hs code is essential for the safe installation of this metal. The code states that the product meets the standards set forth by the Department of Transportation’s National Highway Traffic Safety Administration. It is therefore necessary that you check whether your metal has met the necessary safety standards.