- Jan 11, 2018 -
Hooks are divided into single hooks and double crochet by shape, and the hooks are divided into forged hooks and stacked hooks according to the method of manufacture.
Single hook manufacturing simple, easy to use, but the force is not good, mostly used in the starting weight of less than 80 tons of work, the weight of large often used by the symmetrical double crochet. Laminated hook by a number of pieces of steel sheet cutting forming riveting, the individual plate cracks when the entire hook will not be damaged, safe, but more weight, mostly used in large lifting weight or lifting the bucket of molten steel cranes. Hook in the operating process is often affected by the use of good toughness of high-quality carbon steel manufacturing.