There are three special types of chain block: stainless steel chain block, aluminum alloy chain block and explosion-proof chain block.

Stainless steel chain block is made of stainless steel as raw material, mostly 304 stainless steel, and some special ones will use 316 stainless steel. Stainless steel is an alloy made of steel with a certain amount of nickel and chromium added as the base. It has silver white metallic luster, beautiful appearance, strong self-cleaning ability and corrosion resistance. It is suitable for two occasions. One is the occasion with high hygiene requirements, such as office buildings, food processing plants, medical workshops, etc; One is in humid places, such as ship repair shop, mine, tunnel, etc.

Aluminum alloy chain block is made of aluminum alloy. Aluminum alloy is made by adding copper, magnesium, silicon and other elements into aluminum as the main material. Because aluminum is a light metal, the aluminum alloy hoist is much lighter than other hoists. It is suitable for the power industry, which often needs to carry tools to climb the power grid, to ensure smooth construction without affecting the actions of power workers.

The explosion-proof chain block uses aluminum bronze and beryllium bronze as raw materials, and the housing is generally made of H62 copper alloy to increase hardness. Copper has excellent flexibility in friction and collision with metal, and is not easy to spark. Therefore, this kind of gourd has excellent explosion-proof performance, and because the raw material does not contain iron, it has no magnetism. It is suitable for use in flammable and explosive construction occasions and construction occasions where the magnetic field cannot be disturbed.