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What is the semi-circular metal ball next to the handrail of the subway elevator?

Jan 18, 2019

This is the latest GB16899-2011 escalator and moving walkway installation safety regulations specified in, mainly anti-climbing and anti-slip. Not only is this anti-slip block next to the escalator of the subway, it is available in many places. When the standard is added with anti-slip blocks, the anti-slip block itself has provisions.

This article tags: subway elevator, handrail, semicircle, metal ball, what?