Escalator steps themselves are solid, one piece, die-cast aluminum or steel. Yellow demarcation lines are sometimes added to indicate their edges. In most escalator models manufactured after 1950, both the riser and the tread of each step is cleated (given a ribbed appearance) with comb-like protrusions that mesh with the comb plates on the top and bottom platforms and the succeeding steps in the chain. Escalators featured flat treads and smooth risers; other escalator models have cleated treads and smooth risers. The steps are linked by a continuous metal chain that forms a closed loop. The front and back edges of the steps each have two wheels, the rear of which are set further apart and fit into the trailer-wheel track while the front set have narrower axles and fit the step-wheel track.
|Product Name||Escalator Aluminum Step|
with blue roller,
With index pins
Iris Chen (Ningbo Conai Escalator&Elevator Co.,Ltd)
Tel: 86-574-89028501 Mobile: 86-13123813239
Fax: 86-574-89028502 E-mail: firstname.lastname@example.org
Company website: http://www.nbconai.com