QUALITY ASSURANCE / TOLERANCES / TERMINOLOGY

Quality Control

We are dedicated to ensuring that the upmost quality of products are supplied to our clients. To ensure the highest quality of our products when requested we can supply the following:

  • Mill certificates for the raw materials for Mild Steel and Aluminium grating products.
  • Test certificates for galvanising of Mild Steel products.
  • Current welding certifications for employees at Steel Grating Ltd.
  • Certificates of conformance for the materials supplied for FRP grating.


To coincide with the above all our fabricated products goes through a strict quality control system to ensure that we have manufactured the product to the exact sizes and quantities required by our clients.

Appearance of Grating

The finished look of the grating is important to us at Steel Grating Ltd. One of the best ways to make sure the grating looks neat and tidy is supplying grating with cross bar alignment. Where possible and with enough information given Steel Grating Ltd will do our best to ensure cross bar
alignment is given to grates sitting next to each other within a job we are supplying to you to ensure each job is supplied in an uniform and presentable manner.

Delivery of our Products

Whether a job is small, medium or large in size Steel Grating Ltd clients are assured that we will do everything possible to supply the job within the desired time frames of our clients. We understand that time frames can be very tight on jobs and our delivery is what sets us aside from our competitors. We will always ask when a job is required and ensure that it is delivered within the required time frame.

 

Manufacturing Tolerances

Terminology

1. Load Bar- The flat bar standing on its edge that carries the load.

2. Cross Bar- The twisted rod or flat bar fixed at 90° to the load bars. The cross bars hold the load bars together.

3. Banded / Banding- This is the process of welding a trim bar around the cut edges of the grating

4. Span- This is the overall length of the grate measured parallel to the load bar ie: The load bar length

5. Width- This is the overall width of the panel or landing measured at 90° to the load bar.

6. Serrations- Notches taken out of the top of the load bar to enhance skid resistance.

7. Nosing- A member on the front edge of the stair tread or landing grate to help create definition and enhance skid resistance.

8. Kick plate- Typically in the form of a large flat bar welded to the edge of the grating or mounted to the stanchion post. AS1657 requires minimum 100mm above the walking surface.

9. Cut outs- Areas of the flooring removed to permit passage for plant, structural members or stanchion posts etc.

Load bar spacing chart

* Please note spacings for series 1,2 & 3 are for 5mm thick load bars.  For 3mm bars miuns 2mm of each spacing.  E.g. for series 2 grating 9 bars = 243mm, 21 bars = 603mm

* FRP grating load bar centres are 38.1mm