T30 Self-Drilling Hollow Anchor Bolt
T30 self-drilling hollow anchor bolt is a compact hollow anchor system designed for efficient ground reinforcement in soil, weathered rock, and fractured ground. Its hollow bar enables simultaneous drilling and grouting, helping simplify installation and improve anchorage in variable ground conditions.
T30 Self-Drilling Hollow Anchor Bolt Overview
The T30 Self-Drilling Hollow Anchor Bar is a compact T-thread anchoring solution for ground reinforcement and rock support applications. With a 30 mm outer diameter and ultimate load capacity of up to 320 kN, it provides reliable tensile performance while maintaining a relatively lightweight bar configuration. The T-thread provides secure engagement between the anchor bar, coupler, and nut, while the hollow bar enables drilling and grouting through the same bar.
Product Specifications
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Weight | |||||
| mm | in | kN | kips | kN | kips | kg/m | lbs/ft | ||
 |
SST30L | 30 | 1.18 | 220 | 50 | 180 | 41 | 2.90 | 1.95 |
| SST30N | 30 | 1.18 | 260 | 59 | 220 | 50 | 3.35 | 2.25 | |
| SST30S | 30 | 1.18 | 320 | 72 | 260 | 59 | 3.60 | 2.42 | |
| SET30S | 30 | 1.18 | 320 | 72 | 260 | 59 | 3.35 | 2.25 | |
| Note： 1. Customized products are available based on your specific requirements； 2. 1mm=0.03937in 1kN=0.225kips 1MPa=0.1450377ksi 1kg/m=0.672 lbs/ft |
|||||||||
Coupler
| Size | Outer Dia. | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST30 | 39 | 1.54 | 105 | 4.13 | 0.43 | 0.95 | With sealing ring | |
Hex Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST30 | 46 | 1.81 | 35 | 1.38 | 0.31 | 0.68 | Heat treatment | |
Spherical Collar Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST30 | 46 | 1.81 | 35 | 1.38 | 0.33 | 0.73 | Heat treatment | |
Flat Plate
| Size | Dimensions | Thickness | Hole Dia. | Weight | |||||
| mm | in | mm | in | mm | in | kg | lbs | ||
 |
SST30 | 150×150 | 5.91×5.91 | 25 | 0.98 | 40 | 1.57 | 4.20 | 9.24 |
| 200×200 | 7.87×7.87 | 8 | 0.31 | 36 | 1.42 | 2.43 | 5.35 | ||
Centralizer
| Size | Outer Dia. | Length | Weight | ||||
| mm | in | mm | in | kg | lbs | ||
 |
SET30 | 70 | 2.76 | 35 | 1.38 | 0.20 | 0.44 |
Drill Bit
| Size | Outer Dia. | Application (Advice) | ||||||
| mm | in | |||||||
 |
EX | Sand, fills, gravel | ||||||
| SST30/51 | 51 | 2.01 | ||||||
| SST30/76 | 76 | 2.99 | ||||||
 |
EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | ||||||
| SST30/51 | 51 | 2.01 | ||||||
| SST30/76 | 76 | 2.99 | ||||||
 |
EXX(Venturi) | |||||||
| SST30/63 | 63 | 2.48 | ||||||
 |
Clay Bit | Clay, soft soil, marls, loose sand or gravel | ||||||
| SST30/76 | 76 | 2.99 | ||||||
| SST30/95 | 95 | 3.74 | ||||||
 |
ES-F | Gravel, soft rock | ||||||
| SST30/51 | 51 | 2.01 | ||||||
 |
ESS-F | Weathered rock, stone walls, rubble | ||||||
| SST30/51 | 51 | 2.01 | ||||||
| SST30/76 | 76 | 2.99 | ||||||
 |
EYY | Competent ground, strong rock | ||||||
| SST30/76 | 76 | 2.99 | ||||||
T30 Self-Drilling Hollow Anchor Bolt Applications
The T30 is suitable for general ground support, slope stabilization, tunnel reinforcement, and other geotechnical applications.
Advantages
- Lightweight and Fast Installation: Designed for easy handling and rapid ground support. The small-diameter, lightweight anchor bars are easier to transport, handle, cut, and install, allowing for dense anchor placement on site when required.
- Excellent Equipment Compatibility: No large drilling rigs are required. Compact drilling equipment can be used for direct drilling and installation, making the system highly adaptable to narrow working areas, confined urban excavations, and restricted slope sites. This effectively overcomes the challenges of limited access and insufficient working space.
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