Glass Fiber Reinforced Polymer (GFRP) Bolt

Product Overview

Glass Fiber Reinforced Polymer (GFRP) Bolt is a non-metallic rock support product made from high-strength glass fiber and resin matrix. It is suitable for mining roadways, tunnel faces, slope reinforcement, and temporary support areas that may require later excavation or cutting. Compared with traditional steel bolts, GFRP bolts are lightweight, corrosion-resistant, easy to cut, and convenient to transport and install, making them especially suitable for coal mining, tunneling, and excavation environments where the support area needs to be cut through at a later stage.

The product can be supplied as solid bars, hollow grouting bolts, fully threaded bolts, or ribbed surface structures according to project requirements. It can also be used with nuts, plates, couplers, grouting accessories, and other components to form a complete ground support system.

Key Advantages

Applications

GFRP bolts are especially suitable for engineering areas where the supported section may later be cut, mined, or excavated. Typical applications include temporary support in coal mine roadways, coal mining faces, tunnel face reinforcement, advance support in weak surrounding rock, slope support, and sidewall reinforcement.

For humid, corrosive, or temporary underground environments where traditional steel bolts may increase later processing costs, GFRP bolts provide a more adaptable material solution.

Product Specifications

Structure and Installation

GFRP bolts can be selected in different structures according to the construction method. Solid GFRP bolts are commonly used for resin anchoring or mortar anchoring. The threaded or ribbed surface helps improve bonding with the anchoring material. Hollow GFRP grouting bolts are suitable for projects requiring simultaneous grouting, reinforcement of loose surrounding rock, or improved support efficiency.

During installation, the proper bolt diameter, length, anchoring material, hole diameter, design load, and support period should be selected according to the surrounding rock conditions. For areas that need to be excavated or cut through later, the cuttable nature of GFRP material helps reduce interference with mining equipment, conveying systems, or crushing processes.

Purchasing Tips

For bulk procurement, buyers are encouraged to provide bolt diameter, length, structure type, plate size, nut type, anchoring method, application position, and whether hollow grouting is required. If the product will be used in coal mining faces or tunnel faces, cutting equipment, ground conditions, and support period can also be provided to help match a more suitable GFRP bolt solution.

FAQ

What is the difference between GFRP bolts and ordinary steel bolts?
GFRP bolts are made from glass fiber reinforced composite material. They are lighter, more corrosion-resistant, and suitable for environments where later cutting is required. Steel bolts are more commonly used for conventional metal support systems or permanent high-strength support.

Can GFRP bolts be used for permanent support?
GFRP bolts can be used for temporary or specific permanent support applications depending on project design, load requirements, geological conditions, and anchoring method.

Can the size and accessories be customized?
Yes. Bolt length, diameter, surface structure, plates, nuts, couplers, and packaging can be customized according to project requirements.

Contact Us for a Customized Solution

Different mining, tunneling, and underground engineering projects may require different GFRP bolt lengths, diameters, anchoring methods, plate specifications, and cutting requirements. We can provide product configuration suggestions based on your construction environment, surrounding rock conditions, support period, and purchase quantity.

You are welcome to send project drawings, specification lists, or site application requirements. We can help confirm the suitable GFRP bolt structure, matching accessories, packaging method, and quotation plan. Whether the product is used for coal mining faces, tunnel faces, temporary support, or corrosion-resistant environments, we can provide customized supply support for your project.