As global infrastructure demands grow, the need for reliable, high-load ground reinforcement solutions has never been greater. SupAnchor, Asia's leading manufacturer of self-drilling anchors, has introduced the SupUTS series—a high-performance self drilling anchor system engineered to deliver superior load-bearing capacity and structural reliability in demanding geotechnical applications.
The SupUTS series builds on SupAnchor's proven self drilling anchor technology, offering a 3-in-1 integrated design that combines drilling, grouting, and reinforcement in a single operation. This innovative approach eliminates the need for separate casing and injection equipment, significantly reducing construction time and risk, especially in unconsolidated or unstable soils.
The SupUTS series is designed for high-load scenarios where standard anchors fall short. The "UTS" designation refers to Ultimate Tensile Strength, reflecting the series' optimized tensile and yield load capacities. Key models include SSTR32/360, SSTR38/660, and SSTR51/930, offering ultimate loads of 360 kN, 660 kN, and 930 kN respectively.
A core feature of the SupUTS self drilling anchor bolt is its ribbed hollow steel bar, which serves three critical functions simultaneously: a sacrificial drilling rod, an injection tube for grouting, and a reinforcing bar for long-term load bearing. This 3-in-1 design streamlines installation, reduces labor, and ensures consistent quality—a significant advantage for projects with tight schedules and challenging ground conditions.
The following table summarizes the key technical specifications for the SupUTS series:
| Model | Outside Diameter (mm) | Ultimate Load (kN) | Yield Load (kN) | Cross Sectional Area (mm²) | Weight (kg/m) | Anchor Plate Size |
|---|---|---|---|---|---|---|
| SSTR32/360 | 32 | ≥360 | ≥280 | ~475 | 3.5–4.0 | 200 x 200 x 12 |
| SSTR38/660 | 38 | ≥660 | ≥520 | ~825 | 6.3–6.8 | 250 x 250 x 16 |
| SSTR51/930 | 51 | ≥930 | ≥730 | ~1175 | 9.0–9.5 | 300 x 300 x 20 |
All models feature standardized thread designs that ensure compatibility with SupAnchor's accessory system, including nuts, couplers, and plates. The ribbed surface is optimized to maximize bonding with grouting materials; 45° angled ribs reduce splitting forces on surrounding soil or rock, keeping crack widths below 0.1 mm at maximum load for structural stability.
For corrosion protection, the SupUTS series offers three anti-corrosion options to suit diverse environments: hot-dip galvanizing for general dry or slightly humid conditions; SupCoating (HDG + Epoxy) for moderately corrosive environments such as damp soil or industrial areas; and stainless steel for highly corrosive scenarios like coastal or chemical plant projects. This flexibility extends service life and ensures long-term durability.
On-site installation is straightforward: the hollow bar is rotated into the ground using a standard drilling rig, with grout injected simultaneously through the hollow core. As drilling progresses, the grout fills the annular space and the hollow core, creating a solid bond between the anchor and the surrounding soil or rock. This method is particularly effective in loose or collapsing ground, where conventional casing would be required.
The SupUTS anchors are manufactured from high-strength steel conforming to EN10083-3 and EN10025 standards, ensuring consistent mechanical properties. Elongation exceeds 6% at A100mm, providing good ductility for seismic and dynamic loading conditions. Lengths are available from 2 to 8 meters (depending on model), with couplers allowing extension for deeper installations. The choice of corrosion protection is critical for long-term performance: hot-dip galvanizing provides a zinc coating of approximately 70-100 microns, suitable for pH-neutral soils; SupCoating adds an epoxy layer over the galvanized surface, offering a robust barrier against chlorides and aggressive chemicals; and stainless steel grades (e.g., 1.4401/316) are available for the most severe marine or industrial environments.
The SupUTS series has been validated through extensive laboratory and field testing, including pull-out tests in various soil types. Results demonstrate that the ultimate load capacities are consistently achieved, with failure modes occurring in the surrounding ground rather than in the anchor itself—confirming the anchor's structural integrity. The integrated design also reduces material waste and energy consumption compared to traditional multi-step anchoring methods, contributing to more sustainable construction practices.
The SupUTS geotechnical reinforcement system is ideal for projects demanding high load capacities and efficient installation. Typical applications include:
The drill-and-grout bolt design of the SupUTS series addresses a critical challenge in geotechnical engineering: the need for speed without sacrificing strength. By integrating drilling, grouting, and reinforcement into a single operation, contractors can significantly reduce construction time and labor costs, while the high ultimate load capacity ensures safety and stability for even the most demanding structures.
Moreover, the hollow bar anchor's ribbed profile promotes exceptional grout bonding, transferring loads efficiently to the surrounding ground. This results in a more robust and durable support structure, reducing maintenance needs and extending the service life of infrastructure.
SupAnchor has established itself as the No.1 manufacturer and exporter of self drilling anchors in Asia, with a strong global footprint. The introduction of the SupUTS series reinforces the company's commitment to innovation and engineering excellence. By offering a product line that meets the highest load demands while maintaining ease of installation, SupAnchor addresses a critical gap in the market for high-capacity self drilling anchor systems.
With ISO certifications and a track record of successful projects worldwide, SupAnchor continues to collaborate with engineering firms, contractors, and infrastructure developers to deliver reliable ground reinforcement solutions. The SupUTS series reflects the company's professional approach, innovative design, and collaborative spirit—core values that drive the advancement of geotechnical engineering.
As global infrastructure projects become more complex and demanding, the SupUTS self drilling anchor bolt provides a future-ready solution. Its high strength, corrosion resistance, and efficient installation make it an essential tool for engineers tackling deep foundations, tunneling, mining, and slope stabilization in the most challenging conditions.
With the SupUTS series, SupAnchor not only expands its product portfolio but also sets a new standard for high-load self drilling anchors, reinforcing its position as a leader in the geotechnical reinforcement industry.
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