Metals manufacturers use laser-guided sensors, PC-based control and a robust object-avoidance system to stack 20-ton metal coils almost entirely with automation. Overhead gantry cranes are the workhorses inside heavy industry plants throughout the world, lifting massive loads that are either production inputs or the outputs of a plant's manufacturing process. For example, gantry-crane applications in the metal manufacturing arena include the pouring of feedstock into furnaces or the loading of 60-ton coils onto inventory racks.
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