The aluminum coil for trailer roof is usually of alloys 5052, 5083, 5754 or 6061. 5052 and 5083 aluminum coil sheets have excellent corrosion resistance, making them widely used in maritime applications such as ships, as well as automobiles, aircraft weldments, subway light rails, etc., as well as pressure vessels (such as liquid tank trucks, refrigerated trucks, refrigerated containers), refrigeration …