Alro logo Alro Steel was established in 1948 by Al and Robert Glick and has grown to include Alro Plastics, Alro Industrial Supply and Alro Metals Outlet.

Alro Plastics Product: EXTREN® (Fiberglass Shapes & Plate)


Extren colors 

Size and Availability:

- Equal leg angles
- I-beams
- Wide flange beams
- Channels
- Plates
- Round tubes
- Square tubes
- Rectangular tubes
- Square bar
- Round bar, rods

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 with all shapes having a surface veil to protect against glass fibers penetrating the resin surface in service and to increase corrosion and UV resistance.

Extren is offered in three series designed for different environments and applications.

  • SERIES 500 - An all-purpose series utilizing an isophthalic polyester resin system. Color: Olive Green
  • SERIES 525 - An all-purpose series utilizing a fire retardant isophthalic polyester resin system with a UV inhibitor. Color: Haze 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


  • Corrosion Resistant
  • Non-Conductive
  • Thermally and Electrically Non-Magnetic
  • Electromagnetic Transparency
  • Lightweight High Strength
  • Dimensionally Stable
  • Low Maintenance
  • Custom Colors Available


  • Chemical Processing
  • Building Construction
  • Food & Beverage
  • Pulp & Paper
  • Waste Water Treatment
  • Transportation