In the rugged terrains of a major European tunneling project, engineers faced persistent challenges with corrosion and heavy load-bearing in humid, saline environments. Traditional steel bolts were prone to rust, compromising long-term stability and increasing maintenance costs. Enter SupAnchor®, a leader in geotechnical solutions, which has unveiled its latest innovation: the SupFRP® GFRP Solid Bolt. This high-strength, solid-structured anchoring product is designed to address such engineering hurdles, providing a durable alternative for rock mass support, slope stabilization, and underground structure reinforcement. As infrastructure demands grow across Europe and North America, this launch marks a significant step towards safer, more sustainable geotechnical engineering.

The SupFRP® GFRP Solid Bolt eliminates the hollow structure of conventional injection bolts, leveraging Glassfiber Reinforced Polymer (GFRP) for enhanced reliability. Key technical features include a high tensile strength, with guaranteed loads ranging from 200 kN to 500 kN across models, ensuring stable load-bearing in critical applications like mine roadway reinforcement. Its corrosion resistance makes it ideal for harsh environments, such as saline-alkali areas or near power facilities where non-conductivity is crucial. Weighing approximately one-fourth of steel, the bolt reduces transportation and installation labor, while its easy cuttability allows on-site adjustments without damaging machinery.
To illustrate the product's engineering adaptability, here are the technical specifications for select models, highlighting how they solve common challenges in geotechnical projects:
| Model | Outside Diameter (mm) | Guaranteed Tensile Load (kN) | Weight (kg/m) | Length Options (m) |
|---|---|---|---|---|
| S20/200 | 20 | 200 | 0.52 | 2 to 11 |
| S22/240 | 22 | 240 | 0.62 | 2 to 11 |
| S25/320 | 25 | 320 | 0.83 | 2 to 11 |
| S28/400 | 28 | 400 | 1.04 | 2 to 11 |
| S32/500 | 32 | 500 | 1.30 | 2 to 11 |
These parameters, including a tensile E-modulus of 45 GPa and ultimate strain of 2.0%, ensure consistent performance in varying geological conditions. The waved thread structure enhances bonding with grouting materials, making it a versatile component in drill-and-grout bolt systems. For instance, in slope stabilization projects, the bolt's lightweight nature facilitates quicker installation, while its corrosion resistance extends service life without frequent replacements.
The GFRP solid bolt is engineered for diverse geotechnical reinforcement systems, from temporary supports to permanent structures. Primary applications include:
This adaptability aligns with growing demands in global infrastructure, where engineers seek efficient, durable solutions for complex geotechnical challenges. The bolt's design complements SupAnchor's broader portfolio, including self-drilling anchor systems, offering a cohesive approach to ground anchor bolt manufacturing.
SupAnchor's innovation underscores its commitment to advancing geotechnical safety and sustainability. With ISO certifications and a strong R&D focus, the company has established itself as a trusted soil nail system manufacturer, delivering products that meet rigorous international standards. The GFRP solid bolt contributes to global infrastructure trends, such as the push for greener construction materials and enhanced disaster resilience in tunneling and mining sectors.
In projects across Europe and North America, SupAnchor's collaborative approach has enabled successful implementations, from urban transit expansions to remote mining operations. The brand's professional ethos ensures that each product, like this self-drilling anchor bolt alternative, is tested for performance in real-world scenarios, fostering partnerships with engineering firms and government agencies.

As the industry evolves, SupAnchor continues to lead with innovations that prioritize safety, efficiency, and environmental responsibility. The GFRP solid bolt is not just a product but a testament to the brand's vision of a more secure and sustainable built environment.
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