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Hook factories divide hooks into single hooks and double hooks according to their shapes: single hooks are divided into short (A) type and long (B) type. The only difference between the two is the length of the hook body. The long hook set is equipped with a balance pulley, which can be used for pulley sets with odd ratios, and its lifting capacity is larger; the short hook set is only suitable for pulley sets with double ratios, and its lifting capacity is smaller. The cross-sectional shapes of the hook body are round, square (usually in the form of a piece, and the hook mouth is usually equipped with a mild steel pad), trapezoidal and T-shaped.

According to the manufacturing method, it is divided into forged hooks and sheet hooks (plate hooks). Plate hooks are also made into single hooks (lifting capacity: 37.5-175T) and double hooks (lifting capacity: 100-350t).

Hooks have very high requirements on materials. They need to have high strength and plasticity and toughness, and there is no risk of sudden breakage. Strong materials are generally sensitive to cracks and defects, and the stronger the material, the greater the likelihood of sudden breakage. Therefore, low carbon structural steel and low carbon alloy structural steel are widely used as hook materials, such as DG20, DG20Mn, etc.

Hook factories divide hooks into single hooks and double hooks according to their shapes: single hooks are divided into short (A) type and long (B) type. The only difference between the two is the length of the hook body. The long hook set is equipped with a balance pulley, which can be used for pulley sets with odd ratios, and its lifting capacity is larger; the short hook set is only suitable for pulley sets with double ratios, and its lifting capacity is smaller. The cross-sectional shapes of the hook body are round, square (usually in the form of a piece, and the hook mouth is usually equipped with a mild steel pad), trapezoidal and T-shaped.

According to the manufacturing method, it is divided into forged hooks and sheet hooks (plate hooks). Plate hooks are also made into single hooks (lifting capacity: 37.5-175T) and double hooks (lifting capacity: 100-350t).

Hooks have very high requirements on materials. They need to have high strength and plasticity and toughness, and there is no risk of sudden breakage. Strong materials are generally sensitive to cracks and defects, and the stronger the material, the greater the likelihood of sudden breakage. Therefore, low carbon structural steel and low carbon alloy structural steel are widely used as hook materials, such as DG20, DG20Mn, etc.