Aluminum Bar Grating
Aluminum Bar Grating is lightweight, corrosion resistant, non-sparking, and has an unmatched strength-to-weight ratio. Manufactured from ASTM B221, 6063, or 6061 alloy, aluminum grating is available in four distinct products: type "SG
" Swaged Rectangular Bar, type "SGI
" Swaged "I
"-bar, type "SGF
" Swaged Flush-Top, and type "ADT
" Dovetail Pressure Locked. All four products are available with bearing bar spacing ranging from 19/16" (1-3/16") to 7/16" on center and with cross bars at either 4" or 2" on center.
Aluminum products are typically shipped "mill finish" with no additional treatment. For architectural applications or highly corrosive environments, supplemental anodizing, chemical cleaning, or powder coat finishes are available.
The load tables provide detailed specification information relating to all four aluminum products.
Type "SG" Aluminum GratingThe most widely used aluminum grating, type "SG" rectangular bar,
provides clean, crisp lines. Bearing bars are available with standard plain or optional serrated or Algrip surfaces. The cross bars are fully locked within the bearing bar, slightly below the top surface.
Type 19-SG-4 aluminum grating is the industry recognized standard for industrial applications. With nearly 80% open area, 19-SG-4 spacing is virtually self-cleaning, allowing for the easy passage of dirt, debris, snow, and liquids.
Type "SG" gratings are available in close mesh ADA conforming spacings 11-SG-4 and 7-SG-4 which are commonly used in public areas. When specifying type 11‑SG‑4 for ADA applications, 3/16" thick bearing bars must be designated.
Type "SGI" Aluminum Grating
Manufactured with highly efficient “I” shaped extruded bearing bars, type “SGI
” aluminum grating carries the same load as 3/16" thick rectangular bar type "SG
" aluminum grating.
Advantages include reduced weight per square foot and the striated flanges of the "I
"-bar provide enhanced skid resistance without the added cost of serration.
Type "ADT" Aluminum Dovetail Grating
Type "ADT" aluminum gratings have deep rectangular cross bars and are manufactured by inserting pre-punched bearing bars and cross bars into an “egg-crate” configuration and deforming the cross bars under intense hydraulic pressure.
The deep cross bars on type "ADT" gratings make them popular for architectural applications such as sun shades and infill panels with the deeper cross bar serving as a distinct visual accent.
Click here for Table of Spacings.
Type "SGF" Swaged Flush-Top Aluminum Grating
Manufactured with a unique, extruded cross bar that is flush with the top surface of the bearing bars, type "SGF
" aluminum grating provides an enhanced walking surface for areas subject to continuous pedestrian traffic.
Available in rectangular bar with plain or serrated surfaces, type "SGF
" aluminum grating is also available in ADA conforming spacings for most applications located in the public way.