هندریل چیست؟
One of the main safety features of stairs are railings that help prevent falls and injuries. These staircase parts can be made of different materials such as metal, wood or glass to achieve different visual effects. The type of stair railing and the type of railing used also affect the appearance of the staircase.
تفاوت نرده (Railing) و هندریل (Handrail)
Handrail (handrail) which is also called stair railing (banister), is a part of the staircase that people hold when going up and down the stairs to prevent it from falling. The handrail should provide stability and a continuous guide along the length of the stairs. A handrail can be made of different materials. It can be attached to a wall or extend from the side of a staircase, or placed on top of handrails (vertical posts) on the open side of a staircase.
Handrail ( railing) is an obstacle that prevents people from falling from the side of the stairs. A fence must be strong enough to resist breaking if someone falls or pushes against it. Fences can also be made from a variety of materials and can be fashioned in a variety of styles from a series of simple vertical posts that form a fence to modern cable fences.

بهترین متریال برای نرده و هندریل پله چیست؟
The best material for stair railings and handrails depends on the staircase environment and desired appearance. Metals, such as steel, aluminum and wrought iron, are popular choices for commercial and industrial settings and contemporary settings, where wood offers a more classic look. When the view beyond the fence is important, glass is often used.