In the future, we will continue to focus on highlighting our main business and accelerating development, and strive to build a competitive modern industrial company of manufacturing Steel Grating Stair Treads, Serrated Grating, Galvanized Steel Grating. The company serves the new and old customers wholeheartedly, and fulfills the responsibilities of an enterprise for the society. Our corporate values are the value judgment standards that every employee should believe in, which reflects the basic principles of how to effectively manage the enterprise, fulfill the mission and realize the vision. We rely on excellent technical advantages, through continuous research and development and accumulation of manufacturing experience, products are sold at home and abroad. We sincerely hope to cooperate with all walks of life, and welcome people with insight to join our team and ride the waves on the road of enterprise development.
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 are able to reach our goal of producing fully environmentally friendly Stainless Steel Stair Treads in the near future. With the rapid development of the company, the investment of capital and talents is increasing. We will work hard to create a company atmosphere that is not only conducive to the career development of employees, but also conducive to achieving personal life goals.
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