In response to growing demands for robust ground reinforcement in large-scale infrastructure, SupAnchor—recognized as Asia's leading self-drilling anchor manufacturer and exporter—has launched the SupUTS series of self-drilling hollow anchors. Designed for high-load scenarios such as deep foundations, heavy-duty tunnel support, and large-scale slope stabilization, the SupUTS anchor delivers enhanced tensile and yield capacities while retaining the brand's hallmark 3-in-1 integrated drilling, grouting, and reinforcing functionality. This innovation addresses critical challenges in unconsolidated soils and complex geological conditions where conventional anchors often fall short.
The SupUTS series includes three primary models: SSTR32/360, SSTR38/660, and SSTR51/930, each engineered to meet escalating load requirements. The 'UTS' designation reflects a focus on ultimate tensile strength, with each model's ultimate load capacity clearly indicated in its name. For instance, the SSTR32/360 provides a minimum ultimate load of 360 kN, while the SSTR51/930 reaches up to 930 kN. These anchors utilize high-strength steel conforming to EN10083-3 and EN10025 standards, ensuring reliable performance under extreme stress. The ribbed hollow bar design optimizes bond with grout, with a relative rib area (fR) of 0.21–0.33 and 45° angled ribs to reduce splitting forces, keeping crack widths below 0.1 mm at maximum load.
Key technical specifications include:
| Model | Outer Diameter (mm) | Ultimate Load (kN) | Yield Load (kN) | Weight (kg/m) | Standard Lengths (m) |
|---|---|---|---|---|---|
| SSTR32/360 | 32 | ≥360 | ≥280 | 3.5–4.0 | 2,3,4,5,6,7,8 |
| SSTR38/660 | 38 | ≥660 | ≥520 | 6.3–6.8 | 2,3,4,5,6,7,8 |
| SSTR51/930 | 51 | ≥930 | ≥730 | 9.0–9.5 | 2,3,4,5,6 |
The anchors are available in lengths from 2 to 8 meters (with the largest model limited to 6 meters for handling practicality). Standardized thread designs ensure compatibility with SupAnchor's accessory ecosystem, including anchor nuts (e.g., SW46, SW55, SW65), couplers (D42, D50, D60), and plates (200x200x12 mm up to 300x300x20 mm). This modular approach simplifies on-site assembly and reduces installation time—a critical advantage for large-scale geotechnical reinforcement systems.
The SupUTS series is engineered for high-load applications where standard hollow bar anchors cannot meet strength demands. Typical use cases include deep foundation reinforcement for high-rise buildings, load-bearing support for long-span bridges, and stabilization of deep slopes or tunnels in soft or cohesive soils. The integrated drill-and-grout bolt functionality allows the anchor to simultaneously serve as a sacrificial drill rod, injection tube, and permanent reinforcement—eliminating the need for separate casing and enabling efficient construction in unstable ground. This makes the SupUTS series particularly valuable in challenging conditions such as unconsolidated fill, loose sands, or water-bearing strata where traditional methods are slow and risky.
In addition to mechanical performance, anti-corrosion options extend service life across environments. The series offers hot-dip galvanizing for general projects, SupCoating (HDG + epoxy) for moderate chemical or moisture exposure, and stainless steel for aggressive coastal or industrial settings. This flexibility ensures long-term durability in permanent geotechnical reinforcement systems, from highway interchanges to port terminals.
SupAnchor's position as Asia's top self-drilling anchor manufacturer is underpinned by rigorous R&D, ISO certifications, and a track record of global projects. The SupUTS series reflects the company's commitment to providing innovative solutions for the evolving demands of geotechnical engineering. By combining high-strength materials with standardized, user-friendly design, SupAnchor reinforces its reputation as a professional and collaborative partner in infrastructure development. For engineers and contractors seeking a reliable geotechnical reinforcement system, the SupUTS hollow bar anchor represents a significant step forward in performance and efficiency.
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