Tempered glass is tough and strong. It can be cur to size that people like. It is transparent and looks beautiful. Therefore, glass are widely used in railings. When you hang out in shopping mall, plaza, modern hotels, etc.,the railings almost are stainless steel insert with tempered glass.
Below link is the installation of stainless steel glass railing
https://www.youtube.com/watch?v=G07NmX9KDOQ
What's more, glass railings are also widely used in personal houses
anti rust 316 stainless steel outdoor glass railing for steps and balcony 
stainless steel handrail, round decking post,glass metal handrail for steps 
