T3B gratings are press-welded gratings (30x100 mesh, 40x3 bearer bars) specifically designed for motorways and meet the GC77 specifications of the French Ministry of Equipment and Transport.
MESH
The mesh spacing is defined in accordance with the standards and loads that must be respected:
Standard meshes: 30x30, 30x44, etc...
Standard security meshes: 19x19, 19x40, 30x19, etc...
EDF mesh: 30x27.
Other options are available on request.
BEARER BAR
Standard height: 25-60 mm.
Standard thickness: 2-5 mm.
Other options are available on request.
CROSS BAR
Twisted square: 4-6 mm.
Smooth rounded configuration available on request.
DIMENSIONS
Maximum length of bearer bars: 6100 mm..
Maximum length of twisted squares: 1000 mm, or greater on request.
MATERIAL
S235JR steel as per EN 10025 standards.