steel tubular handrailing

例句：

1. 1.The steel tubular handrailing is securely fastened to the wall.
   钢制扶手牢固地固定在墙上。
2. 2.The steel tubular handrailing provides a secure and durable support for the stairs.
   钢制扶手为楼梯提供了安全且耐用的支撑。
3. 3. The steel tubular handrailing was designed to prevent falls and injuries in public areas.
   钢制扶手设计用来防止公众区域中的跌落和受伤。