| Material | Alloy steel,Carbon steel, Stainless steel 304 or 316 |
| Technology | Drop forged |
| Finish | Hot Dipped Galvanized, Electro Galvanized,Spray Painting,High polished, Mirror Polished |
| Certificate | CE certificate |
| Testing | 100% proof load tested and 100% calibrated |
| Usage | Lifting and connecting |
| Main Standard | Lifting Eye Hook S320,Swivel Hook S322,Slip Hook 324 and 331,Grab Hook 323 and 330,G80 Hooks,many other shaped lifting and chain hooks as request. |
Eye Hooks
The ring eye hook is made of high-quality carbon structural steel or alloy structural steel forged and heat-treated, and has the characteristics of small volume, light weight, and high strength.
classification
The strength level of the eye hook is divided into M (4), S (6), and T (8) levels. The hook test load is twice the ultimate working load, and the breaking load is four times the ultimate working load.
purpose
Main purpose and scope of application: The hook is mainly used as a connecting tool in lifting operations. The maximum working load and applicable range of the hook used and operated are the basis for testing and use, and overloading is strictly prohibited.
The use and precautions of the eye hook
When using the eye hook with rigging, attention should be paid to environmental conditions, and rigging should not be twisted or knotted. During the lifting process, it is strictly prohibited to collide or impact the lifted items with the hook.
Ring eye hooks are generally forged single hooks, and cast hooks are not allowed to be used on cranes. Ring eye hooks are widely made of low-carbon steel and carbon alloy steel.
The hook plays a role in connecting the crane and heavy objects, and its maintenance work must be taken seriously. Therefore, if the lifting height limiter or hook locking device of the hook fails or is damaged, it must not be used again; As for unlicensed employment, leaders should be held accountable. To ensure safety, the hook must be inspected. If any of the following situations are found, it should be immediately scrapped.
① Cracks appear.
② The wear amount of the dangerous section of the hook manufactured according to GBl0051.2 shall not exceed 5% of the original height; The hooks manufactured according to industry standards should be 10% larger than the original size.
③ The aperture has increased by 15% compared to the original.
④ Twisted deformation exceeds 10 degrees.
⑤ Plastic deformation occurs at the dangerous section or hook neck.
⑥ When the wear of the hook bushing reaches 50% of the original size, the core bushing should be scrapped.
⑦ When the wear of the board hook core shaft reaches 5% of the original size, the core shaft should be scrapped.
Another point to note is that the above-mentioned defects on the hook cannot be repaired by welding.
The main method for inspecting hooks is generally visual inspection, which involves carefully observing with a magnifying glass. If necessary, coloring method or non-destructive testing can be used. The wear amount of dangerous sections can be measured using calipers or calipers; The inspection of opening degree is to compare the size measured by the caliper with the original size or the opening degree of the standard hook.
Here is a simple and applicable method: when using a new crane hook, punch a small hole on each side of the hook body opening, measure the distance between the two holes, and record it. To compare and contrast with the size of the deformed hook in the future, in order to determine the magnitude of the change in opening degree. Twisting deformation can be visually observed or measured with the side of a steel ruler. When precision is required, a marking ruler can be used on the platform for inspection. Items ⑤, ⑥, and ⑦ can be visually inspected or checked with a caliper.
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