Aulland® Pultruded Grating Characteristic

Although sharing most of the features of molded GRP grating, there are distinct differences which give pultruded grating a unique usage base. The most important feature of pultruded GRP grating consists of the fact that the glass to resin ratio is higher in the bearing bar direction, therefore the span capacity of pultruded gratings is higher compared to that of the molded grating. This reflects in a reduction of support structures and lower costs.

Chemical resistance
On the basis of the use of premium grade, orthophthalic, Isophthalic polyester or vinyl ester systems and a surface veil Aulland® pultruded gratings offer superior corrosion resistance to variety of acids and caustics from the environment of light or moderately corrosive to extremely corrosive applications.

Light weight
At approximately a quarter of the weight of steel,  Aulland® pultruded gratings are much easier to handle, which reduces handling costs, allows for easier access and maintenance.

Higher stiffness
Aulland® pultruded grating possesses about 35% resin and 65% glass content(by weight), giving it the very high strength to weight ratio. Load bearing bar capacity can be tailored to the application by modifying the glass content, fiber orientation, and combination of mat and fiberglass roving reinforcement.

UV-protection
All Aulland® pultruded gratings are added UV inhibitor into resin during process and a polyester surface veil is applied for optimum protection from the effects of weathering.

Fire Retardancy     
Flame spread rating of class 1,25 or less, per ASTM E-84.

Additional benefits:
Impact resistance
Maintenance free
Easily fabricated
Non-skid and safety
Electrically and thermally non-conductive
Electronically transparent