FRP I Beam Resource Hub | Design, Testing, Sizes & Applications

Jan / 07 / 2026

FRP I Beam Resource Hub: Design, Testing, Sizes and Applications

Welcome to our FRP I Beam Resource Hub. This page provides a comprehensive technical overview of FRP I beams (also known as fiberglass I beams or FRP H beams), covering mechanical testing, structural design, size selection, manufacturing processes, and real-world applications.

This resource hub is created for engineers, project owners, and procurement professionals looking for reliable and verified information on pultruded FRP structural beams.

What Is an FRP I Beam?

An FRP I beam is a pultruded structural profile made from continuous glass fibers and thermoset resin. Compared with steel I beams, FRP I beams offer superior corrosion resistance, lightweight properties, and long-term durability in aggressive environments.

High strength-to-weight ratio
Corrosion and chemical resistance
Electrical insulation and non-magnetic
Low maintenance requirements

FRP I Beam Mechanical Properties & Testing

Mechanical performance is critical for structural applications. Verified third-party testing ensures the reliability of FRP I beams under real working conditions.

Intertek Tested FRP I Beam Mechanical Properties

This section covers tensile strength, compressive strength, flexural performance, and ASTM test standards used to evaluate FRP structural beams.

FRP I Beam Structural Design Guide

Proper design is essential when using FRP I beams. Unlike steel, FRP materials are anisotropic, and deflection often governs beam selection.

How to Design with FRP I Beams: Load, Span and Safety Factors

Learn how to calculate loads, control deflection, select appropriate spans, and apply safety factors for long-term structural performance.

FRP I Beam Sizes, Customization and Manufacturing

FRP I beams are produced using the pultrusion process, allowing both standard and fully customized cross-sections.

FRP I Beam Sizes, Custom Options and Manufacturing Process

This section provides guidance on standard sizes, custom beam options, resin systems, and quality control methods.

Typical Applications of FRP I Beams

Industry	Application
Chemical & Petrochemical	Platforms, pipe racks, access structures
Marine & Offshore	Walkways, decks, corrosion-resistant framing
Water & Wastewater	Gratings, bridges, equipment supports
Power & Utilities	Cable trays, non-conductive structures