points by coating the substrate has the following six categories

1) galvanized steel
Three galvanized steel test according to ASTM-sided coating weight of 75 ~ 700g / m, the most common construction applications galvanized steel Z275 and Z450, respectively, Food dehydrator galvanized 275g / m (steel side plating Min having a thickness of 19μm) and 450g / m.
2) aluminum plate
Architectural aluminum plate common are the following two ways:
(1) is used to heat demanding environment: These aluminum plate metal coating containing 5 to 11% silicon, alloy coating thin layer of aluminum and weighs only 120g / m, the smallest single-sided coating a thickness of 20μm.
(2) for corrosive environments: almost all the metal is an aluminum coating, metal coating thicker, the coating weight of about 200g / m, the minimum thickness of the coating side 31μm.
3) galvanized steel
Galvanized steel, also known as the Asian lead degrees gold plate.
4) galvanized aluminum sheet
A 5% zinc, and aluminum, and mixed Oil machine alloy hot-dip galvanized steel sheet sided, three-sided test coating weight of 100 ~ 450g / m.
5) zinc alloyed steel
The hot dip galvanized steel sheet is subjected to heat treatment, so that the surface of the pure zinc coating is completely converted to Zn-Fe alloy layer-sided galvanized steel product, according to the existing process conditions, the conversion calculated using a zinc coating weight, a maximum of 180g / m.
6) electro-galvanized steel sheet
Is a pure electro-galvanized coated steel products, double the maximum weight of the coating 180g / m, is generally not used outdoors.
In the building roof (and walls), the most commonly used color galvanized steel and color galvanized steel.