As global infrastructure projects face increasingly complex geological challenges, such as unstable soils and high-load demands, SupAnchor, Asia's leading manufacturer and exporter of self-drilling anchors, has launched the Grade 75 self-drilling hollow anchor. This innovation addresses the need for enhanced load-bearing capacity in sectors like tunneling and deep foundation work, where traditional methods often fall short. The anchor's design builds on SupAnchor's expertise in geotechnical engineering, offering a reliable solution for projects requiring superior tensile strength and rapid installation.

The Grade 75 self-drilling anchor system integrates SupAnchor's core "3-in-1 principle," combining drilling, grouting, and reinforcement into a single hollow bar. This design eliminates the need for separate casing, significantly boosting efficiency in cohesive or unconsolidated soils. Key technical features include the use of high-strength Grade 75 steel, which provides exceptional ultimate and yield loads compared to standard anchors. For instance, the anchor's ribbed structure, with a relative rib area of 0.21 to 0.33, ensures strong bonding with grout while minimizing soil disturbance. Below is a table summarizing inferred technical data for common models, based on SupAnchor's product logic:
| Parameter | Grade 75 R32 Model | Grade 75 R38 Model |
|---|---|---|
| Outside Diameter (mm) | 32 | 38 |
| Ultimate Load (kN) | ≥380-420 | ≥550-600 |
| Yield Load (kN) | ≥300-340 | ≥440-480 |
| Steel Grade | Grade 75 | Grade 75 |
| Corrosion Protection | Hot-dip galvanizing, SupCoating | Hot-dip galvanizing, SupCoating |
These specifications enable the anchor to withstand extreme forces in challenging environments, such as deep excavations or soft soils, where standard anchors might fail. The compatibility with anti-corrosion treatments expands its use to moderately corrosive settings, ensuring longevity and reliability. By streamlining on-site processes, this self drilling anchor bolt reduces labor costs and project delays, making it a cost-effective choice for engineers.
The Grade 75 hollow bar anchor is tailored for high-stakes projects across various industries. Its adaptability and strength make it ideal for:
This geotechnical reinforcement system excels in scenarios requiring permanent support, such as nuclear power plant auxiliaries or high-pressure pipeline anchors, where long-term reliability is paramount. The drill-and-grout bolt functionality allows for quick deployment, even in adverse conditions, enhancing overall project resilience.
SupAnchor's introduction of the Grade 75 self-drilling anchor system underscores its commitment to innovation and safety in the global geotechnical sector. As the top manufacturer in Asia, the company's R&D efforts focus on meeting evolving industry standards, including ISO certifications for thread designs like ISO 10208. This anchor not only addresses current infrastructure needs but also supports sustainable development by reducing environmental impact through efficient resource use. SupAnchor's collaborative approach with engineers and project managers ensures that solutions like this hollow bar anchor are practical and scalable, fostering trust in critical applications worldwide. The brand's professional ethos and innovative spirit are evident in its portfolio, which includes a range of products designed for diverse geotechnical challenges.

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