Mechanical Metals | Steel Grating | Bar Grating

Bar Grating, Stainless Steel Grating

We offer Bar Grating products in Steel, Stainless Steel, or Aluminum plus other metal gratings: Perf-O Grip, Grip-Strut, Fiberglass Grating, etc. Although most metal grating products are used as walking surfaces, there are endless creative applications. Please refer to the ‘Bar Grating’ chart listed below in selecting the correct material for your project.

Steel Grating

Bar Grating Stock List

Welded Galvanized Painted Stainless Steel Aluminum**
1″ x 1/8″1″ x 1/8″1″ x 3/16″1″ x 3/16″1″ x 3/16″
1″ x 3/16″1″ x 3/16″1 ¼” x 3/16″1 ½” x 3/16″1 ¼” x 3/16″
1 ¼” x 3/16″1 ¼” x 3/16″1 ½” x 3/16″ 1 ½” x 3/16″
1 ½” x 3/16″1 ½” x 3/16″   
Smooth
Serrated		Smooth
Serrated		Smooth
Serrated		Mill, Sand
Smooth, Serrated		 
    ** Aluminum is Available in: rectangular, I Bar, flushtop, plank, pressure locked, swage locked

How To Order

  1. Specify type of grating
  2. Panel size
  3. Quantity
  4. Size of bearing bars
  5. Spacing of bearing and cross bars
  6. Type of surface (plain, serrated, grit, grooved)
  7. Span (direction of bearing bars)
  8. Dimension tolerances
  9. Banding requirements, if any
  10. Type of material (stainless steel, aluminum, etc.)
  11. Finish (paint, galvanized, special)
  12. Type of nosing-stair treads

Other grating available for sale, please inquire:

  • Fiberglass
  • Grip strut (Galvanized, aluminum, stainless)
  • Stair treads and fasteners
  • Riveted
  • Ladder rungs
  • Safety Gratings
  • Grid steel
  • Anchor devices
  • Cast grating (trench & tree grates)
  • Heavy weld

Standard Nomenclature And Vocabulary

At Mechanical Metals we use a form of NAAMM alpha-numeric designation for bar spacing and manufacturing identification. The first number is center-to-center bearing bar spacing in 1/16ths of an inch. A letter designates the method of manufacturing. The last number details center-to-center cross bar spacing in whole inches (usually 4" or 2"), or rivet spacing usually 3½", 5", or 7").

Methods of manufacture and their letter designations used in this catalog include:

  1. SG-Swagged rectangular bar
  2. SGF-Swagged flush top
  3. SGI-Swagged I-Bar
  4. W-Welded steel
  5. R-Riveted (Steel)
  6. AR-Riveted (Aluminum)

For Example:
19-W-4
Bearing Bars 19/16" (or, 1-3/16") c.c.
Welded Steel Construction
Cross Bars 4" c.c.

15-SGI-2
Bearing Bars 15/16" c.c.
Swagged I-Bar
Cross Bars 2" c.c.

Other Bearing Bar Spacings commonly used
throughout the industry are designated thus:

38 W-4 (or 2) – Bearing Bars 38/16" c.c. (2-3/8" c.c.)
30 W-4 (or 2) – Bearing Bars 30/16" c.c. (1-7/8" c.c.)
22 W-4 (or 2) – Bearing Bars 22/16" c.c. (1-3/8" c.c.)
11-SG-4 (or 2) – Bearing Bars 11/16" c.c.
7-SG (or 2) – Bearing Bars 7/16" c.c.
18-R-7 (or 3½) – Bearing Bars 18/16" Face to Face (1-1/8")**
37-R-5 – Bearing Bars 37/16" Face to Face (2-5/16")**
12-R-7 (or 3½) – Bearing Bars 12/16" Face to Face (¾")**

** Note that riveted grating marking indicates space between bars