Galvanized corrugated sheet is a building material widely used in construction, industry, transportation and other fields. It is mainly processed by galvanizing the steel sheet to enhance its corrosion resistance. Galvanized corrugated sheet can be mainly divided into the following categories according to different classification standards:
1. Classification according to surface galvanizing method
Hot-dip galvanized corrugated sheet:
Hot-dip galvanizing is to immerse the steel sheet in high-temperature molten zinc liquid to form a dense coating of zinc on the surface of the steel sheet. The zinc layer on the surface of the hot-dip galvanized steel sheet is uniform and has strong adhesion, and is usually used in environments with high corrosion protection requirements.
Electro-galvanized corrugated sheet:
Electro-galvanizing is to deposit zinc ions on the surface of the steel sheet by electrolysis to form a thinner zinc layer. The electro-galvanized coating is thinner and is usually used in environments with relatively low corrosion protection requirements.
2. Classification according to the thickness of the galvanized layer
Thin galvanized corrugated sheet:
The galvanized layer is thinner, usually 30-50g/m², and is suitable for places with low corrosion protection requirements, such as some low-pollution environments or indoor use.
Medium galvanized corrugated sheet:
The galvanized layer is 60-120g/m², which is widely used in places with certain requirements for corrosion resistance, such as agricultural facilities, warehouses, etc.
Thick galvanized corrugated sheet:
The galvanized layer is thicker, usually more than 150g/m², and is suitable for environments with high corrosion resistance, such as the seaside, chemical plants, etc.
3. Classification by material
Ordinary galvanized corrugated sheet:
Ordinary carbon steel plate is galvanized, suitable for general construction and industrial use.
Alu-zinc corrugated sheet (aluminum-zinc alloy coating):
Steel plate treated with aluminum-zinc alloy coating (such as an alloy of 55% aluminum, 43.4% zinc and 1.6% silicon) has better corrosion resistance, especially for more severe environments.
4. Classification by corrugated shape
Ordinary corrugated sheet:
Common corrugated shape, the height and width of the crest and trough are relatively consistent.
Vertical corrugated sheet:
The corrugations are arranged vertically, usually used for walls, roofs, etc., which can better enhance the stability of the structure.
Double-wave corrugated sheet:
The corrugation is higher than that of ordinary single-wave corrugated sheet, suitable for large-span structures, and provides stronger load-bearing capacity.
Five-wave or more corrugated sheet:
The design with more corrugations is suitable for large-area roofs or places with high structural requirements.
5. Classification by use
Galvanized corrugated sheet for construction:
It is used for building facades such as roofs and walls. It has good waterproof, anti-corrosion, and heat insulation properties. It is often used in buildings such as factories, warehouses, and workshops.
Galvanized corrugated sheet for agriculture:
It is often used for agricultural purposes such as greenhouses, animal husbandry facilities, and warehouses. It has the characteristics of corrosion resistance and lightness.
Galvanized corrugated sheet for transportation:
It is used for the construction and decoration of transportation facilities such as bridges and tunnels. It has good weather resistance and pressure resistance.
6. Classification by surface treatment
Glossy galvanized corrugated sheet:
It has a smooth surface and is suitable for some buildings with high appearance requirements or environments with strong decorative requirements.
Matt galvanized corrugated sheet: The surface has a certain matte effect, which is suitable for environments that require high durability and weathering resistance, and places that do not have high requirements for appearance.
