L68B2 Mast SectionWhat are the safety devices of tower crane?
Safety device of tower crane: up and down position limiter, operation limit position limiter, rotation locking device, lifting capacity limiter, moment limiter, anti-collision device (light type anti-collision device ultrasonic square collision device), dangerous voltage alarm device.
L68B2 Mast Section：
http://www.towercranesupply.com/product/l68b2-mast-section-for-tower-crane-masts
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