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　　So what are the things to pay attention to during use of the hook?

　　1. The surface of the hook and ring is roughly lubricated. After 1 to 3 years of use, it is necessary to check it.

　　2. When the risky cross section of the hook is found, the wear level exceeds 10%, the load should be lowered. Load experiment of hook: It will be an additional 125% of its weight, suspend for 10 minutes. After unloading, measure the hook. If there is permanent deformation and cracks, it should be updated or lowered for use.

　　3. The hook needs to be updated when one of the following conditions occurs:

　　(1) Use a 20x magnifying glass to investigate the appearance, with cracks or cracks.

　　(2) The load experiment undergoes eternal deformation.

　　(3) Some of the hook tail and threads have deformation and cracks.

　　(4) Some of the hook tails have threads and some of the transitional cracks are tired at the corners.

　　These are the things that need special attention during use of the hook.

　　So what are the things to pay attention to during use of the hook?

　　1. The surface of the hook and ring is roughly lubricated. After 1 to 3 years of use, it is necessary to check it.

　　2. When the risky cross section of the hook is found, the wear level exceeds 10%, the load should be lowered. Load experiment of hook: It will be an additional 125% of its weight, suspend for 10 minutes. After unloading, measure the hook. If there is permanent deformation and cracks, it should be updated or lowered for use.

　　3. The hook needs to be updated when one of the following conditions occurs:

　　(1) Use a 20x magnifying glass to investigate the appearance, with cracks or cracks.

　　(2) The load experiment undergoes eternal deformation.

　　(3) Some of the hook tail and threads have deformation and cracks.

　　(4) Some of the hook tails have threads and some of the transitional cracks are tired at the corners.

　　These are the things that need special attention during use of the hook.