Handle The Toughest Jobs

Whether you need stair treads that can handle constant traffic, walkways that cover a long span, trench covers that hold up under vehicular weight, or platforms with high load demands, pultruded fiberglass grating is the right choice. Available in a variety of grating patterns, the bar shape in FRP pultruded grating is reinforced with glass rovings for durability. Bearing bars and cross rods lock mechanically to deliver maximum unidirectional strength.

The Pultrusion Process

FRP pultruded grating gets its high strength not only from the combination of glass rovings, glass mat and vinyl ester resins, but also from the pultrusion process itself. Consisting of more glass than resin, pultruded fiberglass grating is fabricated by pulling fiberglass roving through a pultrusion machine. To ensure high strength in all directions, rolls of woven fiberglass mat provide multidirectional reinforcement while creels of fiberglass roving provide unidirectional strength along the length of the profile. The grating is formed using load bars kept parallel by a series of cross rods. The fiberglass then receives a resin bath and gets wrapped with a surfacing veil made out of fiberglass strands. The result is bar grating with the high strength to handle any application.

For applications with short spans or where ultra-high strength isn’t needed, OSCO also carries a complete line of molded gratings.

Advantages Of Pultruded Fiberglass Grating

Highly Stable & Strong
Unidirectional strength is maximized by mechanically locking bearing bars and cross rods. Pound for pound, FRP pultruded grating has the strength of steel at a fraction of the weight, plus it won’t corrode or rust like steel can.

Load-Bearing Strength
The continuous glass rovings added in the pultrusion process provide longitudinal strength and the capability to resist compression, tension and bending. At the same time, transverse strength and impact resistance are raised thanks to the continuous glass mat. The result is heavy-duty pultruded fiberglass grating that holds up under heavy weight and high traffic.

Excellent Traction

The FRP pultruded grating available through OSCO includes a quartz anti-slip epoxy coating. The grit it creates provides a safer and more secure walking surface.

Long Service Life

The resin system of the pultrusion process creates a coated resin surface that raises the resistance to chemical corrosion and continuous UV exposure. Pultruded fiberglass gratings can last for decades in applications where steel fails. OSCO’s lineup of FRP pultruded grating also meets the Class 1 Flame Spread Rating per ASTM E-84 test standards.

Easy To Install

Because FRP pultruded gratings from OSCO are lightweight, they’re easy to transport and move around the installation site. Only standard hand tools are needed to cut and fabricate the grating for a perfect fit — no welding or special skills are necessary.

Available Resin Systems

Resin systems establish the amount of corrosion protection in the pultruded fiberglass grating. OSCO’s selection includes two resin systems. Both provide corrosion resistance greatly superior to steel and meet Class 1 Flame Spread Rating per ASTM E-84 test standards.

VFR: This vinylester resin system provides the highest level of corrosion protection. Available standard colors include yellow and gray.

IFR: This premium-grade isophthalic polyester resin system delivers excellent corrosion protection and is also available in yellow and gray.

Grating Panel Sizes*

• 3′ wide x 20′ long
• 3′ wide x 24′ long
• 4′ wide x 20′ long
• 4′ wide x 24′ long

*Dimensions are nominal. Not all panel sizes are stocked in every resin series and color.