Chain scrap judgment
1. The allowable wear value of the hoisting chain shall not exceed 10% of the diameter of the circular chain bar material or the thickness of the auxiliary equipment
2. Calculated from the unbent plane of the main ring, the main ring should be scrapped if the main ring is twisted more than 10 degrees.
3. It is forbidden to use it when there are cracks, bends, or twists in any part of the sling, and the hinges are stuck or stiffened and blocked and cannot be ruled out.
4. The permanent elongation of the chain and single ring shall not exceed 5% of the original length
