A zinc coating, usually hot-dipped, in which the zinc and steel form a metallurgical bond. The thickness of a hot-dipped coating can be varied from a thin zinc/iron alloy layer to heavy applications suitable for extended outdoor exposure.
Humid subtropical climate. In Africa, the humid subtropical climates are found in two separate areas on the southern hemisphere of the continent. The Cwa climate is found over a large portion of the interior of the Middle and Eastern African regions.
As you can see in the map the location of Tropical Dry and Wet Climates can be found north and south of the Equator within the tropical belt. A good example that illustrates the climate type can be read in the tail of two cities, referring to Kano and Lagos in Nigeria below.he general pattern of the tropical climate is warm temperatures. Depending on the type of tropical climate, humidity is variable with Equatorial climates experiencing large quantities of precipitation all year round and Tropical Wet and Dry and Tropical Monsoon climates expereincing seasonal shifts in rain patterns.