Product Overview
Related solutions: Explore our pultruded FRP profiles, FRP rebar, pultrusion machines, pultrusion dies.
Our 18mm Fiberglass Rock Bolt is a ground support technology, specifically engineered for demanding mining, tunneling, and civil engineering applications. As part of our comprehensive FRP rock bolt product line, these bolts are manufactured using advanced pultrusion technology from quality glass fiber bundles embedded in a high-performance resin matrix, delivering good strength while maintaining the lightweight and corrosion-resistant properties that modern construction projects demand.
Key Technical Specifications
| Specification | Value | Standard |
|---|---|---|
| Nominal Diameter | 18mm | Industry Standard |
| Tensile Load Capacity | 160 kN | Tested & Certified |
| Tensile Strength | 600 MPa | High Grade |
| Shearing Strength | 150 MPa | Approved |
| Torsion Resistance | 45 Nm | Tested |
| Plate Load Strength | 70 kN | Verified |
| Density | 1.6–2.1 g/cm³ | Lightweight Design |
| Available Lengths | 1400–2600mm | Customizable Options |
Strong Performance Features
Durability
- Highly Corrosion Resistant: Non-metallic composition reduces rust and corrosion concerns
- Chemical Resistance: Performs well in aggressive underground environments
- Long-Term Reliability: Maintains structural integrity over long service life
Safety Properties
- Non-Conductive: Electrical insulation properties protect workers and equipment
- Non-Magnetic: Does not interfere with sensitive equipment or magnetic instruments
- Flame Retardant: Meets stringent underground safety standards
- Antistatic: 3×10⁷ Ω resistance for explosive environment safety
Installation Advantages
- 75% Lighter than equivalent steel bolts – reduces labor costs and installation time
- Machine Cuttable: Compatible with TBM and other cutting equipment
- Easy Handling: Lightweight design improves worker safety and productivity
- Flexible Length Options: Custom sizing available for specific project requirements
Primary Applications
Mining Operations
- Underground mine roof support and stabilization
- Tunnel reinforcement in coal, metal, and aggregate mining
- Permanent and temporary ground support systems
Civil Engineering Projects
- Subway and underground transportation systems
- Highway and railway slope stabilization
- Foundation reinforcement and soil retention
- Underground parking structures
Specialized Applications
- Areas requiring non-magnetic materials
- Electrically sensitive environments
- High-moisture or chemically aggressive conditions
- Projects requiring long-term durability
Competitive Advantages Over Steel Rock Bolts
| Performance Factor | 18mm Fiberglass Rock Bolt | Traditional Steel Bolt |
|---|---|---|
| Corrosion Resistance | ✅ Strong resistance | ❌ Prone to rust & degradation |
| Weight | ✅ approximately 75% lighter than steel of equal diameter | ❌ Heavy, labor-intensive |
| Electrical Safety | ✅ Non-conductive | ❌ Electrical hazard risk |
| Equipment Compatibility | ✅ TBM cuttable | ❌ Can damage machinery |
| Long-term Performance | ✅ Long service life | ❌ Requires maintenance/replacement |
| Installation Speed | ✅ Faster, easier installation | ❌ Slower, more labor required |
Quality Assurance & Standards
Our 18mm Fiberglass Rock Bolts are manufactured under strict quality control protocols and meet:
- International Mining Standards for underground support systems
- Civil Engineering Specifications for permanent installations
- Safety Regulations for flame resistance and antistatic properties
- Environmental Standards for long-term durability
Each bolt undergoes rigorous testing including tensile strength verification, load capacity confirmation, and surface quality inspection to ensure consistent, reliable performance.
Technical Support & Customization
Engineering Support: Our technical team provides application-specific recommendations and load calculations to ensure optimal performance for your project requirements. Custom Solutions: Available in various lengths (1400-2600mm standard range) with custom diameters and specifications available for specialized applications. Browse our complete FRP rock bolt collection for additional sizing options including our popular 24mm fiberglass rock bolt for heavier-duty applications. Installation Guidance: Comprehensive installation procedures and best practices documentation provided with each order.
FAQ
What is the tensile strength of 18mm fiberglass rock bolt?
It has a high tensile capacity, typically around 160 kN, suitable for medium to heavy-duty rock support applications.
What are its main advantages over steel rock bolts?
It is 75% lighter, corrosion resistant, non-conductive, and spark-free, suitable for wet, corrosive, or explosive environments.
What environments is it suitable for?
It works well in tunnels, mines, slopes, foundations, and areas with groundwater, chemicals, or high humidity where steel would corrode.
How is it installed?
Drill a hole slightly longer than bolt length, insert resin cartridge, spin the bolt to mix resin, hold until set, then install bearing plate and nut.
What lengths are available?
Standard lengths range from 1.4m to 6m, with custom lengths up to 12m available for specific project needs.
Is it fire resistant?
Yes. It has low flammability and self-extinguishing properties, suitable for underground safety requirements.
Does it meet safety standards?
Yes. It meets anti-static and flame retardant standards for mining and tunneling applications.
Can it be cut or customized?
Yes. It can be cut to length and fitted with custom plates, nuts, or couplers for specific installations.
Why Choose Our Fiberglass Rock Bolts?
✅ Reliable Performance: Used in many installations ✅ Cost-competitive: Lower total cost of ownership due to durability and easy installation ✅ Safety First: Enhanced worker safety through lightweight design and electrical isolation ✅ Environmental Resistance: Performs in the harshest underground conditions ✅ Modern: Modern solution designed for next-generation construction projects
Order Information
Minimum Order Quantity: Contact for project-specific requirements Lead Time: Standard 2-3 weeks, expedited options available Technical Support: Included with every order Warranty: tested to meet project requirements Transform your ground support projects with the reliability and performance of professional-grade 18mm Fiberglass Rock Bolts. Contact our engineering team today for project-specific recommendations and competitive pricing. Learn more about IncomePultrusion’s complete range of composite solutions
For technical specifications, installation guidelines, or custom engineering solutions, our certified specialists are ready to assist with your specific project requirements.
This 18mm diameter belongs to our complete FRP rock bolt range covering ground support for mining, tunneling, and slope stabilization.
Request a quote: Need this product for your project? Contact us for a quote — our engineering team can help with specifications, custom sizes, and bulk orders.








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