Patbest international wholesale building materials supplier and distributor
Get Wholesale Pricing

Product Specification: High-Performance GFRP (Fiberglass) Rebar

Category: Structural Reinforcement / Coastal Resilience

Compliance: ASTM D7957, ACI 440.1R

Wholesale Availability: Stocked in standard diameters (#3 through #8) for local pickup or international export.

1. Product Overview

Glass Fiber Reinforced Polymer (GFRP) rebar is a high-strength, corrosion-resistant alternative to traditional carbon steel. Composed of high-quality glass fibers embedded in a vinyl ester resin matrix, GFRP is specifically engineered for concrete reinforcement in environments where salt air, high humidity, or chemical exposure would lead to rapid steel oxidation and structural spalling.

2. Physical & Mechanical Properties

The following data represents the performance benchmarks for Patbest’s GFRP inventory compared to Grade 60 Carbon Steel.

PROPERTY

GFRP Rebar (Grade III)

Grade 60 Carbon Steel

Tensile Strength

 1000 – 1,350 MPa

415 – 500 MPa

Modulus of Elasticity

 40 – 60 GPa

200 GPa

Density (Weight)

1.9 – 2.1 g/cm³

 7.85 g/cm³

Corrosion Resistance

Excellent (Inert)

Poor (High Oxidation)

Electrical Conductivity

Non-Conductive

Highly Conductive

Magnetic Permeability

 Non-Magnetic

Highly Magnetic

3. Key Performance Advantages

  • Corrosion Immunity: GFRP does not rust. This eliminates the need for expensive cathodic protection or increased concrete cover in coastal seawalls, docks, and bridge decks.

  • High Strength-to-Weight Ratio: At 25% the weight of steel, GFRP significantly reduces logistics costs for Caribbean exports and allows for faster on-site handling without heavy machinery.

  • Thermal Neutrality: It does not transfer heat or cold like steel, reducing thermal bridging in specialized building envelopes.

  • MRI & Radio Frequency Transparency: Ideal for medical facilities and high-tech manufacturing where electromagnetic interference must be minimized.

Photo Feb 24 2026 2 09 01 PM GFRP rebar
Photo Feb 19 2026 1 06 34 PM GFRP rebar

4. Technical Compliance & Standards

Our GFRP reinforcement is manufactured to meet or exceed the following international building standards:

  • ASTM D7957: Standard Specification for Solid Round Glass Fiber Reinforced Polymer Bars.

  • ACI 440.1R: Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars.

  • FDOT Section 932: Approved for use in Florida Department of Transportation projects where non-metallic reinforcement is specified.

5. Field Handling & Installation

To ensure structural integrity, the following field protocols should be followed:

  • Cutting: Use a diamond blade or fine-tooth saw. Do not use a torch or shear.

  • Bending: GFRP cannot be reshaped in the field. All bends (L-bars, stirrups) must be pre-fabricated.

  • Tying: Use plastic-coated wire ties or nylon zip ties to maintain the non-corrosive and non-conductive nature of the system.

  • Storage: Store under cover to prevent prolonged UV exposure prior to concrete pouring.

6. Total Cost of Ownership (TCO) Analysis

Property

GFRP Rebar (Grade III)

Grade 60 Carbon Steel

Initial Material Cost

 $0.80 – $1.20 / ft (retail)

$0.65 – $0.80 / ft (retail)

Freight & Shipping

Light (1/4 the weight of steel)

Heavy

Labor (Installation)

Faster (Lighter material handling)

 Slower (Heavier material handling)

Maintenance (50 Years)

$0.00

High (Rust repair/Spalling)

Project Life Expectancy

100+ Years

20–40 Years (Coastal)

7. Logistics & Export Advantages

For our international and wholesale partners, the physical properties of GFRP translate directly into bottom-line shipping savings:

  • Container Optimization: Because GFRP is roughly 75% lighter than steel, you can fit significantly more linear footage in a standard 20ft or 40ft container without hitting weight limits.

  • No Corrosion in Transit: Unlike steel, which can develop “surface rust” during humid sea voyages, GFRP arrives at the destination in pristine condition, ready for immediate inspection and pour.

  • Reduced Job Site Equipment: On-site in remote locations or islands, GFRP can be moved manually by a small crew, reducing the need for heavy cranes or forklifts.

8. Primary Application Use-Cases

  • Marine Infrastructure: Seawalls, bulkheads, docks, and pier caps where saltwater exposure is constant.

  • Swimming Pools & Water Features: High resistance to chlorine and water-treatment chemicals.

  • High-Traffic Slabs: Parking garages and bridge decks where de-icing salts or salt-air moisture are prevalent.

  • Specialized Facilities: MRI rooms and data centers where non-magnetic and non-conductive reinforcement is a technical requirement.

9. Contractor’s Quick-Tips for Success

  • Cutting: Always wear PPE (gloves and eye protection) when cutting GFRP to protect against glass fibers. Use a Diamond Blade for the cleanest edge.

  • Tying: Use nylon zip ties or plastic clips. Using steel tie wire defeats the purpose of a non-corrosive system.

  • Storage: While GFRP is durable, it should be stored under a tarp if it will be exposed to direct sunlight (UV) for more than 3 months prior to being encased in concrete.

10. Technical Downloads

[PDF] GFRP Full Technical Data Sheet > [PDF] Installation Guide for Marine Applications > [Link] Request a Quote for Wholesale Export Pricing