- Class I - Light Duty: These are normal maintenance cranes which are not in constant use. Cranes for periodical maintenance of plant and machinery come under this category.
- Class II - Medium Duty: This class perhaps covers the largest number of cranes used in the industry. In workshops, foundries, processing plants, important ware-houses and in fact every area, where a fair degree of activity exists.
- Class - III Heavy Duty : For workshops and production shops, where the cranes, in addition to normal handling work, also become a part of production process.
- Class - IV Extra Heavy Duty : This class includes very special cranes whose highest importance is in steel industry, important storage houses and in some other selected industries. These are for continuous duty operation.
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