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Generally, when purchasing roller shutter doors, Here, we remind you that it is important to understand the performance of roller shutter door manufacturing materials. Roller shutter door manufacturing materials usually include the following:
Zinc alloy material has poor hardness and anti rust ability. Even thick electroplating is easy to fade, blacken, rot and blister, but its advantage is that it is easy to make parts with complex patterns, especially pressure casting. The locks with more complex patterns seen in the market may be made of zinc alloy. Consumers should carefully identify them.
Aluminum or aluminum alloy, ordinary aluminum alloy (except for Aerospace) is soft and light, with low material strength, but easy to process and form.
Steel has good strength and low cost, but it is easy to rust. It is generally used as the internal structural material of lock, and is not suitable for external decoration.
Copper is rarely used and is usually used to make locks.
From the perspective of durability, a good material should be stainless steel, especially as a surface material, the more it is used, the brighter it will be. It has good strength, strong corrosion resistance and unchanged color. However, there are many kinds of stainless steel, mainly including ferrite and austenite. Ferritic stainless steel is magnetic, commonly known as stainless iron. It will rust for a long time and in a bad environment. At present, only 304 stainless steel is a good stainless steel material.