Using tips of Large tonnage hook group:
Matters needing attention when using the hook group:
1. Whether there are cracks on the surface of the hook body and parts of the thread
2. Torsional deformation of the hook tip
3. Wear amount of plate hook mandrel
4. Wear amount of pulley protection cover and pulley groove
5. The opening degree at the hook tip expands, which is vulnerable to tensile stress and fracture
6. Wear condition of the hook part
7. Deformation of screw parts at the hook neck
8. Wear amount of plate hook bushing