EXTREN® is a proprietary combination of fiberglass reinforcements and thermosetting polyester or vinyl ester resin systems.
EXTREN® 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.
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EXTREN® is offered in three series designed for different environments and applications.
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
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 All structural shapes are available in a polyester resin (Strongwell PE) and vinyl ester resin (Strongwell VE) which are certified to NSF-61.
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- Corrosion Resistant
- Low Conductivity - Thermally and Electrically
- Non-Magnetic - Electromagnetic Transparency
- Lightweight
- High Strength
- Dimensional Stability
- Low Maintenance
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 A product logo identification program was implemented by Strongwell after designers and specifiers of EXTREN® learned that problems were occurring because sellers or contractors were substituting look-alike shapes.
Since July 1, 1993, all EXTREN® fiberglass structural shapes and plate have been imprinted with the EXTREN® logo every three feet down the length of the part. Square and round tubes have the logo imprinted inside the shape. Small and unobtrusive, the logo assures customers that they are getting EXTREN® properties backed up by corrosion, mechanical and structural testing as conducted by Strongwell.
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Strongwell manufacturing facilities are ISO-9001:2008 certified. This ensures the highest quality standards for producing EXTREN® structural shapes in a world class facility. A "first article" series of tests on each EXTREN® production run is designed to assure the end user that the structural members meet or exceed published minimum criteria.
EXTREN® is stocked by a network of distributors worldwide. Strongwell also maintains a large inventory to service distributors and prevent long lead times. The current EXTREN® products are shown on the EXTREN® Availability List.
To obtain the name of the distributor in your area, send an email with your name, location, phone number and product of interest to Strongwelland someone will contact you.
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In addition to being the world's largest producer of pultruded parts, Strongwell is also the largest fabricator of structures utilizing pultruded components. Typical fabrications include beam, column and plate structures, all-fiberglass buildings, platforms and other custom fabrications involving grating and handrail.
If you are looking to fabricate fiberglass structures with Strongwell products, please complete a fabrication worksheet.
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