Description

Steel Grating Plate is deep-processed products combination of non-slip and side panels. Mainly used for stepping on the ladder, it is usually referred to as stair treads. According to installation, stair treads general can be divided into two types:welding fixing and bolted fixing. If welded directly to the support and does not require additional stepping on the side panels, relatively economical and durable, but not easy to disassemble. Bolt treads on both sides have the thicker panel, and punch a hole in the side panel, the installation is a direct bolt-on, reusable recycling.

From economic point of view, as far as possible use the proposed module width (Series 1 using **5,**5,**5,**5,**5,**5, Series 2 using **5,**5,**5,**5,**5 mm, etc.) as a multiple of **0mm length (such as **0, **0,**0,**0,**0,***0,***0 mm, etc.).
Stair treads quality requirements: （1）Stair treads tolerance: treads length tolerance range [0 - (*3) mm], treads width tolerance range [(*3mm)*3mm]. 
（2）Stair treads welding requirements: welded joints of the former guard and wrapping with each load flat steel is not less than 3mm weld angle.
Stair treads types: （1）According to installation, stair treads can be divided into welding fixing stair treads and bolted fixing stair treads. Welding fixing stair treads is generally steel grating, and bolted fixing stair treads need add *5 × 5mm flat steel to steel grating as side panel. 
（2）Depending on whether there are non-slip can be divided into Nosing (Striped Plate or bar steel) stair treads and non-Nosing stair treads.