The concave grating is the original shape of the molded grating. During the heating of the resin mixture and the hardening of the grating, a concave surface is created on the top of the bars. This results in very good anti-slip properties. The Gratings achieve serration class R13.
GRP gratings with a concave surface are used where good chemical and weather resistance is required.
High chemical resistance
High slip resistance
Durability: Good corrosion and weather resistance
Gratings can be loaded in the supports and crossbar direction
Electrically insulating and low thermal diffusivity
High standing and walking comfort
High slip resistance
Relatively low tare weight = lower transportation costs
Resin finishes
Fire classes
Type: GRP-K538-38-5
| GRP | material |
| K | concave |
| 5 | Width of bars 5 mm |
| 38 | Grating height 38 mm |
| 38 | Pitch 38 x 38 mm |
| 5 | Width of bars 5 mm |
| Height | Width of bars | Pitch in mm | Mesh in mm |
| 13 mm | 5 – 6 mm | 38.1 x 38.1 mm
50.8 x 50.8 mm |
32.1 x 32.1 mm
44.8 x 44.8 mm |
| 15 mm | 5 – 6 mm | 19.05 x 19.05 mm | 13.05 x 13.05 mm |
| 16 mm | 5 – 6 mm | 38.1 x 38.1 mm | 32.1 x 32.1 mm |
| 22 mm | 5 – 6.1 mm | 38.1 x 38.1 mm
19.05 x 19.05 mm |
32 x 32 mm |
| 22 mm | 5 – 6.1 / 4.5 mm | 14.1 x 14.1 mm | 8 x 8 mm |
| 25 mm | 5 – 6.25 mm | 19.05 x 19.05 mm
38.1 x 38.1 mm 40 x 40 mm 50.8 x 50.8 mm 25 x 102 mm 38.1 x 97.6 mm |
12.8 x 12.8 mm
31.85 x 31.85 mm 33.75 x 33.75 mm 44.55 x 44.55 mm 18.75 x 95.75 mm 31.85 x 91.35 mm |
| 30 mm | 5 – 6.9 / 4.5 mm | 12.7 x 12.7 mm | 8 x 8 mm |
| 30 mm | 5 – 6.5 mm | 19.05 x 19.05 mm
20 x 20 mm 40 x 40 mm 38.1 x 38.1 mm |
12.55 x 12.55 mm
13.5 x 13.5 mm 33.5 x 33.5 mm 31.6 x 31.6 mm |
| 35 mm | 5 – 6.8 mm | 38.1 x 38.1 mm | 31.3 x 31.3 mm |
| 38 mm | 5 – 6.5 / 4.5 mm | 14.50 x 14.50 mm | 8 x 8 mm |
| 38 mm | 5 – 6.9 mm | 19.05 x 19.05 mm
20 x 20 mm 25.4 x 25.4 mm 38.1 x 38.1 mm 40 x 40 mm 66.08 x 66.08 mm |
12.15 x 12.15 mm
13.1 x 13.1 mm 31.2 x 31.2 mm 33.1 x 33.1 mm 59.18 x 59.18 mm |
| 40 mm | 5 – 7 mm | 40 x 40 mm
83.3 x 83.3 mm |
33 x 33 mm
76.3 x 76.3 mm |
| 50 mm | 5 – 7.5 mm | 25.4 x 25.4 mm
38.1 x 38.1 mm 50.8 x 50.8 mm |
17.9 x 17.9 mm
30.6 x 30.6 mm 43.3 x 43.3 mm |
| 50 mm | 6.5 – 9 mm | 38.1 x 38.1 mm | 29.1 x 29.1 mm |
| 50 mm | 9 – 11 mm | 38.1 x 38.1 mm
25.4 x 50.8 mm |
27.1 x 27.1 mm
13.9 x 39.3 mm |
| 60 mm | 9 – 11.5 mm | 25.4 x 50.8 mm | 13.9 x 39.3 mm |
| 60 mm | 9 – 11 mm | 38.1 x 38.1 mm | 27.10 x 27.10 mm |
| 70 mm | 9 – 11 mm | 38.1 x 38.1 mm
25 x 50 mm |
27.10 x 27.10 mm
13.9 x 39.3 mm |
Discover our fastening systems.
Gratings Tailor-Made. We supply you with pressed and forge-welded gratings in the common standard types in 6-8 working days and in max. 10 working days including technical processing.
We have an extensive stock program. This means you can receive gratings, grating steps, perforated metal planks and GRP-Products in common standard designs and dimensions within 48 hours.
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