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FRP gratings

Moulded fiberglass gratings are manufactured from reinforced glass fibre resin. Moulded into panels, it is extremely resistant to corrosion and to attack from chemicals. It is composed of a flame-retardant resin with the following properties:

  • Can be classified M1/F1
  • Classified to NFP 92-501 and NFF 16-101 standards
  • ASTM E84-0 index fsi<25 standards
  • R13 non-skid (concave or siliceous) to BGR 181 and DIN 51130 standards
  • Load-bearing both ways up
  • Gratings with filled-in siliceous surface available
  • Staircase step panels with siliceous nose, green colour
  • On request: - profiles for balustrades - ladders with or without hoops

Characteristics

Mesh centre distances

JK Technic has a range of FRP gratings with different mesh types on offer:

  • 38 x 38 - 26 x 26 - 50 x 50 - etc...
  • Security bars: 19 x 19.

Bearing bars

  • Standard dimensions: 30 / 7; 38 / 7 and 50 / 7 mm.

Standard panel dimensions

  • 1000 x 2026 mm.
  • 1000 x 3055 mm.
  • 1220 x 3055 mm.

Standard dimensions stair treads with gritted front edge

  • 800 x 275 mm.
  • 1000 x 275 mm.
  • 1000 x 350 mm.

Finishes

  • Concave.
  • Grit.
  • Entirely grit-covered surface.

Finished products

  • We stock mats, stair treads and stair rails which are easy to assemble on site.
  • Custom manufacture possible based on the dimensions and/or plans supplied by the customer.

JK technic also offers a range of accessories and special fastening systems for FRP gratings :

Assemblage caillebotis

316 stainless steel clamp with 19 x 19 mesh washer. In stock.

Assemblage caillebotis

316 stainless steel clamp with 30 x 30 mesh pin. In stock.

Assemblage caillebotis

316 stainless steel stair support for 30 x 30 and 19 x 19 mesh. In stock.

Assemblage caillebotis

Adjustable foot.
Dimensions of insert: 35 x 35 mm.
Thickness of insert: 20 mm.
Height of foot: 40 or 70 mm.
In stock.

Assemblage caillebotis

FRP support bracket
Standard length: 3,000 mm.
Dimensions: 30 x 30 x 5 mm
and 50 x 50 x 6 mm.
Can be cut to size.
In stock.

Manufacture

Moulded FRP grating is manufactured from fibreglass-reinforced resin. It is composed of 65% resin for its chemical and UV resistance and is composed of 35% fibreglass for increased mechanical strength. JK Technic has 3 types of resin on offer with different degrees of resistance to chemical corrosion.

Résine isophtalique

Isophthalic resin
Fire-resistant and corrosion and chemical-resistant RAL 6010 green
IN STOCK

Résine isophtalique

Isophthalic resin
Fire-resistant and corrosion and chemical-resistant RAL 7035 grey
IN STOCK

Vinylester resin
with extremely high chemical resistance (high concentrations).
IN STOCK

Résine orthophtalique

Orthophthalic resin​
with resistance to a wide range of chemicals.
ON REQUEST

Areas of application

  • Agrifood industry
  • Paper and cellulose industry
  • Pharmaceutical industry
  • Plastics industry
  • Fibre and textile industry
  • Automotive construction and aeronautics
  • Offshore plants
  • Wastewater treatment plant
  • Navy and shipbuilding
  • Transport
  • Stripping and galvanization plant
  • Petrochemicals
  • Platforms, flooring and bridges
  • Stair treads
  • Banister
  • Sewer, excavation and well cladding
  • Production lines
  • Conduit cladding
  • Danger zone indications
  • Car wash
  • Chemicals storage untreated
  • Sealing
  • Etc.

Technical infos

Structures

 

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MESH

Spacing between bearing bars (BB) and transverse bars (TB). Mesh created in this way has two characteristics: mesh width and mesh centre spacing (pitch).

  • Mesh width: the width of the opening that is between the BBs and TBs
  • Mesh centre spacing (pitch): the distance between the centre of BBs and TBs (for example, the distance between the centre of one bearing bar and the centre of the nearest adjacent bearing bar)

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MESCH GROUP/TYPE 

 Mesh is made up of two values (in mm), where the first dimension is the distance between adjacent bearing bars, and the second dimension being the distance between adjacent transverse bars (for example: 33.33 x 33.33; 33.33 x 11.11; 55.55 x 55.55; etc.).

For convenience’s sake, the term “mesh gauge” is more frequently used (for example: 30 x 30 - 30 x 10 - 50 x 50 - etc.)

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BEARING BARS (BB)

Straight rods bearing the weight and arranged in rows at right angles to the transverse bars and supports. 

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TRANSVERS BARS OR CROSS BARS (TB)

Arranged at right angles to the bearing bars, and bonded to the bearing bars by the exertion of high pressure (press-locked grating) or by electrowelding (press-welded grating). The transverse bars are manufactured respectively in “straight metal” or as square, twisted bars.

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BB AND TB GAUGE

 this is defined by two values (in mm), where the first corresponds to their height and the second to their thickness. Gauge examples: 30 / 2; 30 / 3; 40 / 3; etc...

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RANGE

Gap between the supports on which the ends of the bearing bars rest.

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IMPERMEABILITY - SECURITY BARS

security mesh uses the following mesh gauge: 30 x 19; 19 x 30; 19 x 19; etc. It is recommended for industrial environments (14122 standard) and allows nothing exceeding a 20 mm diameter ball to pass through it.

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SUPPORT BRAKET

Bracket welded to the ends of the grating rendering it suitable for certain uses (for example: shelving, guttering).

Material

 

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STEEL

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STAINLESS STEEL

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ALUMINIUM

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FRP

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RUBBER

Finishes

 

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"T" BANDING BAR

 Bar which forms the outer frame of the panels.

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"FLAT" BANDING BAR

 Bar which forms the outer frame of the panels.

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TOE PLATE

Straight metal welded onto the end of the grating

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RAISED BORDER

Straight metal welded onto the end of the grating

Serration

 

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SIMPLE ANTI-SLIP SERRATION ON BB

Various types of serration can be applied to bearing and/or transverse bars. Please note that this double serration option (for BBs as well as TBs) is only applicable to press-locked grating. Serration can only be applied to bearing bars for press-welded grating.

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SIMPLE ANTI-SLIP SERRATION ON TB

Various types of serration can be applied to bearing and/or transverse bars. Please note that this double serration option (for BBs as well as TBs) is only applicable to press-locked grating. Serration can only be applied to bearing bars for press-welded grating.

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DOUBLE ANTI-SLIP SERRATION ON BB AND TB

Various types of serration can be applied to bearing and/or transverse bars. Please note that this double serration option (for BBs as well as TBs) is only applicable to press-locked grating. Serration can only be applied to bearing bars for press-welded grating.

 

Specific applied standards

 

ISO 14122 : Permanent means of access to machines and industrial plants

ISO 14122-2 : Working platforms and walkways

ISO 14122-3 : Stairs, ladders and handrails

RAL-GZ 638 : Manufacturing tolerances for gratings

RAL-GZ 639 : Manufacturing tolerances for safety grids

EN ISO 1461 : Galvanisation requirements

P98-350 : Integration of disadvantaged people

EN 10025 : Steel standard

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