Home

MOULDED FRP MANUFACTURING PROCESS

Liquid resin and continuous fibreglass roving's are systematically laid in a mould, layer after layer to produce the desired thickness and panel dimensions. The finished moulds are then set aside to cure. The one piece interwoven mesh construction of moulded fibreglass grating produces a product with optimal corrosion resistance and bi-directional strength. Since the fibreglass grating is "cast" in one-piece, there is no mechanical joint between bearing bars. The high percentage of resin (65%) in moulded fibreglass grating offers superior corrosion resistance and optimal impact resistance. Moulded fibreglass gratings with a square mesh pattern offer increased load capacity and panel utilisation due to its bi-directional trait. One-Piece construction, the fibreglass grating distributes loads throughout the fibreglass grating section.

ADVANTAGES OF FRP MOULDED GRATING

• Lightweight
• Chemical corrosion resistance
• Non-sparking
• Non electrically conductive
• Non-magnetic
• tapered bars all debris to easily fall through 
• Standard mesh grating has a 70% open area
• Mini Mesh grating has a 45% open area

Click here for FRP Grating section of our online catalogue 

Standard sheet size:

FRP grating comes in one standard sheet sizes 1220x3660mm ex stock. Other sheet sizes are available but are manufactured to order. Steel Grating Ltd can supply stock sheets of FRP grating or cut the FRP grating to the desired shapes and sizes as required. 

 Surface Finish:

• Grit top surface (most commonly ordered and supplied)
• Concave top surface available to some thicknesses and colours
• Plain top surface (manufactured to order only)

 Resin Selection:

Isophthalic polyester resin (I) – most commonly used FRP grating resin, industrial grade resin, great for environments where fibre glass grating may occasionally be in contact with harsh chemicals due to splashes or spills.

Vinyl ester resin (V) – Developed to withstand frequent and direct contact in the harshest of chemical environments. Type V is ideal for acidic and caustic environments.

Please contact Steel Grating LTD  for any non-standard resin types, surfaces and colours.

FRP Chemical resistance chart: 
Please click here for our FRP grating chemical resistance charts

Commonly stocked items:

We provide numerous FRP grating options readily available off the shelf to be supplied to our clients as full sheets or custom cut to sizes and shapes required.

FRP grating is available in different thicknesses, surface finish, colour and resin selection.

Please see table to the right to see what FRP grating products are readily available for supply.

Other combinations of thickness, mesh size, surface finish, colour and resin selections are available but are manufactured to order. Please contact Steel Grating Ltd for more information. 

Loadings:

FRP grating has an excellent strength to weight ratios. Being of one piece construction FRP grating offers increased load capacity and panel utilization due to its bi-directional trait distributing loads throughout the fibre glass grating section.

The table to the right shows what our various FRP grating types will span under various uniformly distributed loading conditions.

Cutting: FRP grating can be cut with a variety of different cutting tools.  For best results we recommend a heavy duty rotary saw with a masonry, carbide or diamond tip blade.  Make sure that the grating is on a steady and even surface to help prevent shifting or moving of the grating that can cause chipping of the grating surface. Please ensure you wear gloves, full length overalls, a face shield and a dust mask when cutting FRP grating.  Always cut FRP grating in a well ventilated area or where mechanical extraction of the dust particles is available.