Pressure-welded gratings
elefant® grating before pressure welding. Type SP upside down.
Pressure welding
elefant® grating after pressure welding- Type SP upside down.
Manufacturing elefant® gratings
An elefant® grating consists of a combination of bearing bars that give the grating its strength, and filler/control bars. The bars are pressed and welded together in one process in the pressure welder.
The actual pressure welding involves electrical heating of the bar material and the subsequent joining of the bars under great pressure at a temperature of approx. 1500oC, thus ensuring fusion - in other words a spot weld.
This process binds the bars together in a grid. Because all intersections are welded, there is practically no risk that the bars work loose when cutting to size or when using the grating without edge bar.
In order to finish the gratings and to protect against sharp edges, edge bar is normally welded on the sides. The edge bar is usually 3 mm thick plate, although thicker plates can be fitted if requested.
Material
Elefant gratings may be pressure-welded in steel S235JRG2 (240 Yield), 10149-2 (420 Yield), Corten A, Stainless Steel EN 1.4301 or 1.4404 and pressure-locked in aluminium.
Surface treatment
The gratings are primarily hot-dip galvanised according to BS EN ISO 1461 2009, but are also available in other finishes, depending on the material of the grating/specification. Please refer to individual specification parameter sheets for further information.
Flexible
Aesthetic
Rolling
Alignment
Advantages of elefant® “Pressure Welded” gratings
| Strong: | High point load capabilities suitable for vehicular traffic. |
| Versatile: | Site alterations can be easily made utilising hand grinders, with no danger of bars popping out. |
| Flexible: | Any mesh size from 9 mm up to 200 mm in any increment, ensuring equalized apetures in any panel size. |
| Rolling: | Because of the welded structure of the gratings it is also possible to roll to a given radius. |
| Variety: | Not just standard mesh patterns from standard sheets elefant® gratings are made to order allowing for greater control over direction of mesh and bearing direction to suit individual requirements. |
| Aesthetic: | Flat bars in both directions are generally more appealing especially our full depth “Type N” grating used extensively for balustrade infills and brise soleil panels. |
| Alignment: | Owing to elefant® gratings being specially manufactured to customer requirements we are able to align bars accurately where panels are of the same size or a datum has been agreed. A unique feature that proves wasteful from standard stock panels with varying bar tolerances. |
| Finished: | Bespoke gratings supplied complete with fixing plates, cleats or clips finished to your specification ready for site fitting. |
Pressure welded elefant® gratings are suitable for commercial, industrial and private applications, owing to our flexible production line/machinery.