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　　Hook factory divides hooks into two types according to their shape: single hook and double hook: single hook is divided into short (A) type and long (B) type. The only difference between the two is the length of the hook body. A balance pulley is installed on the long hook group, which can be used for singular pulley sets, with a large lifting weight; a short hook group is only suitable for double pulley sets, with a small lifting weight. The cross-sectional shape of the hook body is round, square (usually in sheet type, and its hook mouth is usually equipped with mild steel pads), trapezoidal and T-shaped.

　　According to the manufacturing method, it is divided into forged hooks and sheet hooks (plate hooks), and the board hooks are made into single hooks (lift weight of 37.5-175T) and double hooks (lift weight of 100-350t).

　　Hooks require very high material requirements and require high strength, plasticity and toughness, and there is no risk of sudden breakage. Materials with high strength are generally sensitive to cracks and defects. The higher the strength of the material, the greater the possibility of sudden breakage. Therefore, the hook materials are widely used in low-carbon structural steel and low-carbon alloy structural steel, such as DG20, DG20Mn, etc.

　　Hook factory divides hooks into two types according to their shape: single hook and double hook: single hook is divided into short (A) type and long (B) type. The only difference between the two is the length of the hook body. A balance pulley is installed on the long hook group, which can be used for singular pulley sets, with a large lifting weight; a short hook group is only suitable for double pulley sets, with a small lifting weight. The cross-sectional shape of the hook body is round, square (usually in sheet type, and its hook mouth is usually equipped with mild steel pads), trapezoidal and T-shaped.

　　According to the manufacturing method, it is divided into forged hooks and sheet hooks (plate hooks), and the board hooks are made into single hooks (lift weight of 37.5-175T) and double hooks (lift weight of 100-350t).

　　Hooks require very high material requirements and require high strength, plasticity and toughness, and there is no risk of sudden breakage. Materials with high strength are generally sensitive to cracks and defects. The higher the strength of the material, the greater the possibility of sudden breakage. Therefore, the hook materials are widely used in low-carbon structural steel and low-carbon alloy structural steel, such as DG20, DG20Mn, etc.