EXTREN® is a proprietary combination of fiberglass reinforcements and thermosetting polyester or vinyl ester resin systems. It is produced in more than 100 standard shapes and all shapes have a surface veil to protect against glass fibers penetrating the resin surface in service and to increase corrosion and UV resistance.
The unique advantages possible with FRP have enabled pultruded profiles to penetrate markets where other materials could not meet the design or end use requirements efficiently.
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About EXTREN®
Series 500
An all-purpose series utilizing an isophthalic polyester resin system with a UV inhibitor. Color: Olive Green
Series 525
An all-purpose series utilizing a fire retardant isophthalic polyester resin system with a UV inhibitor. Color: Slate Gray (plus certain handrail and fixed ladder components in yellow)
Series 625
A premium series both fire retardant and highly corrosion resistant utilizing a vinyl ester resin system with a UV inhibitor. Color: Beige
EXTREN® is offered in three series designed for different environments and applications.
Features of EXTREN
- Corrosion Resistant
- Low Conductivity - Thermally and Electrically
- Non-Magnetic - Electromagnetic Transparency
- Lightweight
- High Strength
- Dimensional Stability
- Low Maintenance
Markets
- Transportation
- Electrical/Electrical Utility
- Chemical Processing
- Cellular Communications
- Consumer/Recreation
- Building Construction
- Appliance/Equipment
- Pulp & Paper
- Oil & Gas
- Water/Wastewater
- Air Pollution Control
- Aeronautical Defense
- Plating
- Agricultural
Material Preparation
EXTREN® shapes and sheet can be sawed, drilled, routed and turned on a lathe or other machine tool. Punching should be limited to thicknesses of 3/16" and under. Carbide or diamond-tipped saw blades and tool bits are recommended for faster speeds and longer tool life. EXTREN® cannot be bent, rolled or pressed as can steel.
Joining
EXTREN® can be fastened mechanically with screws, bolts or rivets. FIBREBOLT® fiberglass studs and hex nuts (available from GEF Incorporated) can also be used with EXTREN®. EXTREN® can be joined by adhesives. The strongest connections can be made by using a combination of mechanical fasteners with adhesives.
Process
Pultrusion is a manufacturing process for producing continuous lengths of reinforced polymer structural shapes with constant cross-sections. Raw materials are a liquid resin mixture (containing resin, fillers and specialized additives) and flexible textile reinforcing fibers. The process involves pulling these raw materials (rather than pushing, as is the case in extrusion) through a heated steel forming die using a continuous pulling device.
The reinforcement materials are in continuous forms such as
rolls of fiberglass mat and doffs of fiberglass roving. As the
reinforcements are saturated with the resin mixture ("wet-out")
in the resin bath and pulled through the die, the gelation, or hardening, of the resin is initiated by the heat from the die and a rigid, cured profile is formed that corresponds to the shape of the die.
While pultrusion machine design varies with part geometry, the basic pultrusion process concept is described in the schematic shown below.
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INCORPORATED
1721 Winfield Road, Winfield, West Virginia 25213
GEF INCORPORATED
1721 Winfield Road, Winfield, West Virginia 25213
(304) 755-1600 FAX (304) 755-3150 800-784-0529 Toll Free
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To contact us via e-mail, click here or call us at:
800-784-0529
FIBERGLASS STRUCTURAL SHAPES & PLATE
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