A safety gate is similar to normal gates and can be single, double, or cantilever door with slide, swing, lift, roll or sink design. The entry system of a safety gate include one-way flow control, two-way flow control, one-at-a-time flow control, alarm-actuated entry and exit, blocked barrier entry, or a safety interlock component. The power source of a safety gate can be electric, hydraulic, pneumatic, or manual. Metal materials for industrial safety gates include aluminum, carbon steel, cast iron, stainless steel, glass, wood, thermoplastics, and composite materials. 
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