T4 type staircase with checkered plate nosing bolted fixing stair treads

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T4 type staircase with checkered plate nosing bolted fixing stair treads

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.

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