The hooks are divided into single hooks and double crochet by shape, and are divided into forged hooks and stacked hooks according to manufacturing method. Single hook manufacturing is simple, easy to use, but the force is not good, mostly used in the weight of 80 tons or less of the workplace; heavy weight often uses the force symmetrical double crochet. Laminated hook from a number of pieces of cutting formed by the steel plate riveting, the individual plate cracks when the entire hook will not be destroyed, the safety is good, but the weight is larger, mostly used in large lifting weight or lifting steel barrels crane.
The hooks are often impacted during the operation and must be made of high quality carbon steel with good toughness. Hook classification is very wide, generally include: Shackle, rings, rings, pear-shaped ring, long link, combination of rings, s hook, Nose hook, American hook Claw hook, eye-shaped slip hook, with safety card link screw, chain shackle, with a unique, novel, high quality, safety features, applicable to factories, mines, petroleum, chemical and ship terminals. Ensure safety, quality safety factor, static load up to 3 times times.
Starting from 5 tons ~150 tons.