Press locked grating T3A
T3A gratings are a type of press-locked grating (30x130 mesh, 40x3 bearer bar). Specifically designed for motorways and meets the GC77 specifications of the French Ministry of Equipment and Transport .
T3A gratings can be supplied fitted with spacing and connecting attachments on request.
Custom Manufacture
GEI can manufacture made-to-measure T3A gratings to meet your requirements (layout, size, etc.).
Our research department is available to handle your technical requirements and your intended layouts, and can advise you on issues up to and including the realisation of your orders.
Motorway gratings are also available as T3B gratings
Gratings for industrial floors and floorings are also available as press-locked gratings, safety grids and fiberglass gratings.
Mesh
- The mesh spacing is defined in accordance with the standards and loads that must be respected:
- For a BB thickness of 2-3 mm:
The BB spacing is typically a multiple of 11.11. - For a BB thickness of 4-5 mm:
The BB spacing is typically a multiple of 18.
The IB spacing is typically a multiple of 17. - Other options are available on request.
Bearer Bar
- Standard height: 20-150 mm.
- Standard thickness: 2-8 mm
- Other options are available on request.
Transvers bars or cross bars (TB)
- Standard height: 10mm
- Standard thickness: 2mm
- Other options are available on request.
Dimensions
- Maximum length of bearer bars: 4000 mm.
- Maximum length of spacers: 2000 mm.
Material
- S235JR steel as per EN 10025 standards.
- Stainless steel 304 ( 1.4301 ).
- Stainless steel 316 ( 1.4571 ).
- AlMg3 aluminium.
Oberflächenbehandlungen
- Galvanized in accordance with EN ISO 1461 standards.
- Lacquered in accordance with standard RAL.
- Other options are available on request.
Finish
- Available with 'T' or 'flat' edge.
- Available with single or double notching on request.
- Half-moon or sawtooth notching available.
Finished Products
- Custom manufacture based on the dimensions given by the customer or on plans drawn up by our research department.
- Plain or galvanised ½ laps, panels and staircase steps can be easily assembled on site.
Assembly
GEI press-locked grating is characterized by transverse, cross bars inserted under high pressure into pre-existing notches in the bearing bars. This grating is produced in “flat” or “T”-shaped sections, welded into place and then optionally undergoes hot-dip galvanizing in accordance with the applicable EN ISO 1461 standards. For situations with an increased risk of slipping, anti-slip grating can be produced, where the upper surface of the bearing bars and/or the transverse bars can be given anti-slip serrations. GEI press-locked grating is typically manufactured from EN 10025 standard S235JR steel, which ensures a consistent production quality. RAL-GZ 638 manufacturing tolerances applied.xxx
BBs and TBs fixed in place
Press-locking
Application of banding bars
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