T4 type staircase with checkered plate nosing bolted fixing stair tread

T4 type staircase with checkered plate nosing bolted fixing stair tread

T4 type stair tread is fixed by bolted and with checkered plate nosing                         1. T4 Type Stair Tread Material:

Mild Steel (Low CaTbon Steel) or Stainless Steel

2. Types of steel grating for T4 Type Stair Tread:

-Flat type: the most widely steel grating.

-Serrated type: With better no-slip.

-"I" type: On the surface,path and items not in the same flat.With the character of light weight,economic and practical.                           

3.T4 Type Stair Tread Surface Treatment:

Untreated, Painting ,Powder coated or Hot dip Galvanizing                                 4.T4 Type Stair Tread welding procedure:     

Edge bars and attachments are welded with a minimum 3mm fllet weld to one side of:

-Every 5th load bar on Series 30 Grating

-Every 4th load bar on Series 40 Grating

-Every 3rd load bar on Series 60 Grating

-Full Weld:Weld one side of every load bar.

-Seal Weld: Weld both sides of every load bar.