Our company puts customers and their needs in the first place, and with our strong strength in application and sales experts' all-round consultation as well as outstanding service, we will be your most reliable partner in the field of Steel Grating Stairs, Serrated Press-Locked Steel Grating, Bar Grating Clip. We are loyal and trustworthy, open and honest, and self-improvement, and become a model of global compliance with social norms and morality. You are very welcome to personally visit our company.
Steel stair treads are the primary load-bearing grating product for industrial and commercial applications, also known as welded bar grating stair treads. Due to its robustness, durability, and high load-carrying capacity, it can meet all load-bearing application requirements, making it the most popular bar grating in many architectural, commercial, and industrial applications.
* Materials: Mild steel, Stainless steel, Aluminum steel
* Surface Treatment: Galvanized , Painting
Types of Steel Stair Treads
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Welded fixing, banded ends without nosing. | Bolted fixing, holed end plates without nosing. |
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Welded fixing, banded ends with checker plate nosing. | Bolted fixing, holed end plates with nosing. |
Specifications of Steel Stair Treads
* Length
1) Common length: 700, 800, 900 mm.
2) Maximum length: 1200 mm, suitable for several people passing at the same time in double direction or it is used as the escape line for workers.
3) Minimum length:600 mm, suitable for single person passing.
* Bearing Bar Pitch: 20 mm, 30 mm or 40 mm.
* Cross Bar Pitch: 50 mm or 100 mm.
* Nosing Type: checker plate, strip plate and hole plate.
* Bearing Load: 1.5kN.
* Deflection: no larger than 1/500 of span.
* Deflection Testing Method:
1) Span no larger than 1200 mm: press 1.5 kN load at the 100 mm × 100 mm area.
2) Span larger than 1200 mm: press 1.5 kN at the symmetrical 600 mm position.
* End Plate Size and Hole Size of Bolted Fixing Grating: refer to table 10.
* Tolerance of Steel Stair Treads
1) Length tolerance: +0/-3mm.
2) Width tolerance: ± 3mm.
3) Vertical tolerance. Vertical tolerance angle is no larger than 25°.
Steel Grating Tolerance for Stair Treads
Connection of Stair Treads and Ladder Beam
* Bolt connection: it adopts thickening end plate for welding and pre-holed on the end plate and fixed by bolts and nuts. It is recycled for other applications or places.
* Welded connection: it is difficult to uninstall but more economical and firmer than bolted connection.
Technical Parameters
Flat Bar Welded Steel Stair Treads Specification | ||||
Item | Plate Width (mm) | Plate Thickness (mm) | Plate Pitch (mm) | Cross Bar Pitch (mm) |
SGDF-01 | 65 | 5 | 20/30/40 | 50/100 |
SGDF-02 | 60 | 5 | 20/30/40 | 50/100 |
SGDF-03 | 55 | 5 | 20/30/40 | 50/100 |
SGDF-04 | 50 | 5 | 20/30/40 | 50/100 |
SGDF-05 | 50 | 3 | 20/30/40 | 50/100 |
SGDF-06 | 45 | 5 | 20/30/40 | 50/100 |
SGDF-07 | 40 | 5 | 20/30/40 | 50/100 |
SGDF-08 | 40 | 3 | 20/30/40 | 50/100 |
SGDF-09 | 35 | 5 | 20/30/40 | 50/100 |
SGDF-10 | 35 | 3 | 20/30/40 | 50/100 |
SGDF-11 | 32 | 5 | 20/30/40 | 50/100 |
SGDF-12 | 32 | 3 | 20/30/40 | 50/100 |
SGDF-13 | 25 | 5 | 20/30/40 | 50/100 |
SGDF-14 | 25 | 3 | 20/30/40 | 50/100 |
SGDF-15 | 20 | 5 | 20/30/40 | 50/100 |
SGDF-16 | 20 | 3 | 20/30/40 | 50/100 |
Heavy Duty Press-Locked Steel Stair Treads Specification | |||||
Item | Plate Width (mm) | Plate Thickness (mm) | Plate Pitch (mm) | Cross Bar Size (mm) | Cross Bar Pitch (mm) |
SGDP-01 | 150 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-02 | 130 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-03 | 120 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-04 | 100 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-05 | 90 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-06 | 80 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-07 | 75 | 8 | 40 | 8 × 8 | 50/100 |
SGDP-08 | 75 | 6 | 30 | 8 × 8 | 50/100 |
SGDP-09 | 75 | 6 | 40 | 8 × 8 | 50/100 |
SGDP-10 | 70 | 6 | 30 | 8 × 8 | 50/100 |
SGDP-11 | 70 | 6 | 40 | 8 × 8 | 50/100 |
We will continue to uphold the spirit of innovation, focus on industry applications, and provide better Hot-DIP Galvanized Steel Grating Stair Treads for Step Ladders (Tec-Sieve T1 to Tec-Sieve T10) and services for the global industry, and create value for customers. To find out the market role and position, to make the enterprise management characteristic and product individualization is the means to enhance the competitive strength of our company. Our company always adheres to the service concept of "scientific and technological innovation, win-win cooperation, integrity and efficiency, first-class service".
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