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　　Hook is a hanging tool that is often used during lifting. As we all know, hooks are divided into two types: single hook and double hook. Single hooks are often used together with slings, and sometimes they are also combined with hook racks. Double hooks are only used on cranes. After understanding these categories and performance, do you understand what are the requirements for the production and use of hooks?

　　Let me introduce it to you below:

　　(1) The hook is forged with a whole piece of key material (usually using No. 20 ******* carbon cable steel) and requires annealing, with a hardness requirement of 95-135 (HB).

　　(2) The surface of the hook should be smooth and must not have defects such as peeling, markings, sharp angles, cracks, etc. The well shall not be repaired for repair of damaged hooks to avoid brittle breakage and accidents.

　　(3) When lifting, the sling should be hung to the bottom of the hook; if the hook is directly hooked in the suspension ring of the component, the hook cannot be hard or twisted.

　　(4)The hooks are available in single and double hook types. The lifting work generally uses a single hook, among which the main size and lifting weight of the ring hook are the same.

　　(5) If there is permanent deformation or cracks on the hook, it should be scrapped. When the wear reaches 10%, it should be downgraded or replaced.

　　Hook is a hanging tool that is often used during lifting. As we all know, hooks are divided into two types: single hook and double hook. Single hooks are often used together with slings, and sometimes they are also combined with hook racks. Double hooks are only used on cranes. After understanding these categories and performance, do you understand what are the requirements for the production and use of hooks?

　　Let me introduce it to you below:

　　(1) The hook is forged with a whole piece of key material (usually using No. 20 ******* carbon cable steel) and requires annealing, with a hardness requirement of 95-135 (HB).

　　(2) The surface of the hook should be smooth and must not have defects such as peeling, markings, sharp angles, cracks, etc. The well shall not be repaired for repair of damaged hooks to avoid brittle breakage and accidents.

　　(3) When lifting, the sling should be hung to the bottom of the hook; if the hook is directly hooked in the suspension ring of the component, the hook cannot be hard or twisted.

　　(4)The hooks are available in single and double hook types. The lifting work generally uses a single hook, among which the main size and lifting weight of the ring hook are the same.

　　(5) If there is permanent deformation or cracks on the hook, it should be scrapped. When the wear reaches 10%, it should be downgraded or replaced.