Aluminum step tread

Aluminum tread plate

1. Step Board Introduction

Tread plates, also known as stair tread plates, steel stair tread plates, or step plates, are a type of stairboard used on platforms. They can be installed in two ways: welded connection and bolt connection. Welded tread plates can be directly welded onto the stair beam.

2. Step Plate Type

T1 Step Plate                                                                                         T2 Step Platform

T3 Step Board                                                                                         T4 Step Deck

3. Step Board Supplemental Description Diagram

Step Board Style

The front skid plate can be made of patterned steel, striped steel, or other anti-slip materials as per the buyer's requirement.

5. Step Board Model Explanation

Material Type: G for Carbon Steel

BG for stainless steel

Bar Spacing: 100mm (Center to Center)

50mm (center spacing)

Bar Size: Standard 6x6 Twisted Square Steel

Small-scale steel grating is made of 5×5 twisted square steel.

Stainless steel commonly used φ5mm round steel

Flange Steel Sizes: Standard sizes range from 20×3mm to 75×6mm and more.

Flat Steel Spacing: Series 1 - 30mm (Center to Center)

Series 2 - 40mm (Center Distance)

Series 3 - 60mm (Center Distance)

Flat Steel Type: P for Plain Surface Type (can be abbreviated)

S for enhanced anti-slip tooth pattern

Surface Treatment: G for Hot-Dip Galvanized

U for unprocessed surface (can be abbreviated)

For example, the specifications T1G253/30/100PG and above use 25×3 flat steel strips, with a strip spacing of 30mm and a crossbar spacing of 100mm, and are hot-dipped zinc-coated T1`treads.

6. Standard Tread Plate Dimensions and Description

(1) Standard stair widths are 700mm, 800mm, and 900mm; widths should not exceed 1200mm.

(2) For single-use staircases, the width between the two diagonal beams or railings should be no less than 600mm.

(3) When stairs are frequently used by several people crossing simultaneously or as an evacuation route for personnel, the width of the stairs should be increased to 1200mm.

(4) The step boards are made of steel grating, with the model selected according to Appendix E.

Step overhangs must withstand a load of 1.5KN, acting on a 100mm x 100mm area when the width is not more than 1200mm. For widths exceeding 1200mm, an additional load of 1.5KN should be applied at every 600mm symmetrically. The deflection of the stair tread should not exceed 1/500 of the span.

Step treads and landing platforms should have good anti-slip properties.

(7) The vertical overlap of the adjacent upper and lower steps should be no less than 10mm.

Step plates are connected to the stairs by welding or bolt fastening, as shown in Figure A.1. When using bolt fastening, the bolt size must not be less than M10.

(9) The end panel with bolted step board has dimension t for installation hole A, as shown in Figure A.2 and Table A.1.

Note: Round holes with a size of 25×14 can also be chosen for installation.

7. Production Process

8. Application Scenarios

Tread plates find extensive use in various applications, including platforms and walkways in power plants, water treatment facilities, and other industrial settings, as well as in municipal and environmental engineering projects. They are also commonly used on ground platforms in large venues such as cinemas, visitor platforms, and parking lots.