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|Surface::||Galvanizing||Model Number::||ST1 ST2 ST3 ST4|
|Mesh (Spacing):||19-w-4,15-w-2,30/100,30/50,40/50||Grating Standard::||ANSNAAMM; BS-4592-1987; AS1657-1985|
|Technology::||Pressure Welded/pressure Locked||Bearing Bar Type:||Plain Serrated I Type|
bar grating treads,
exterior metal stair treads
Galvanized serrated non slip steel stair treads ST1 ST2 ST3 ST4
Stair tread is made of steel grating& widely used for different types ofsteel ladders,feature easy installation,strong structure&aeatheic appearance&good water permeability.We can fabricate according customer'size.
|T1||Used for welding installation, the end plates of both ends use the same flat steel as load flat steel to make edge band without nosing.|
|T2||Used for bolt installation, the end plates of both ends use 65*5 flat steel to encircle the edge, and open hole without, nosing .|
|T3||Used for welding installation, the end plates of both ends use the same flat steel as load flat steel to encircle the edge, with nosing.|
|T4||Used for bolt installation, the end plates of both ends use 65*5 flat steel to encircle the ends ,and open bole with nosing.|
Treads and tread plate and grille of steel grating has the following advantages:
Saving material: the province of the material to withstand the same load conditions, and accordingly, can reduce the material of the support structure.
Reduce investment: saving materials, Province the artificial, Province duration, free cleaning and maintenance.
Construction is simple: in the pre-installed support on national folder with bolt or welding to complete one.
Save Duration: No on-site reprocessing, installation is very quick.
Durable: the factory by the hot-dip zinc treated with preservatives, impact resistance and stress ability.
Modern style: beautiful appearance, design specifications, air and light, giving a sleek, contemporary feel to the whole.
Light structure: the timber is small, light and easy lifting.
Anti-plot dirt: the plot is not the rain, snow and dust.
Reduce wind resistance: good ventilation, the case of wind drag, reducing wind damage.
The design is simple: No small beam, simple structure, designed to simplify; without detail design of steel grating, can only
specify model factory on behalf of clients design exhaust plate Figure.
Common size for reference
|Item||Recommended maximum stair treads length (mm)|
|Bearing bar dimension mm||25*3||25*5||32*5|
|Bearing bar’s pitch at 30 mm||550||900||1300|
|Bearing bar’s pitch at 40 mm||450||750||1200|
|Item||Recommended stair treads width (mm)|
Bearing bar pitch at 30mm
Bearing bar pitch at 40mm
|Fixing hole center(mm)||45||75||100||150|
1. What is the application of steel grating?
The main usage can be divided to 4 kinds: platform, flooring, stair treads and drainage cover.
See the above pic for reference.
2. what is the quantity of galvanization? And how long will it last?
We do our galvanization as American standard, for over 5mm thick steel grating, it is no less than
610g per square meter , for less than 5 mm thick steel grating, it is no less than 460g per square meter usually it is 60-80μ per square meter. And it can last at least 50 years.
3. Which standard can your products meet?
We can produce as customer's need. Here are most popular standard:
4. Do you provide design?
Yes, we can provide CAD design for customers, as long as you can tell us your requirements.
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