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Hollow Bar Anchor (SDA)
Application Areas
- Soil Nailing
- Tunnel Support
- Slope Stabilization
- Rock Bolting
- Structural Reinforcement
- Foundations
- Underpinning
SDA Hollow Bar R series
Technical Data
| Specification | Typical Value / Range | Notes |
|---|---|---|
| Material | High-strength steel (ASTM A615/A706 or equivalent) | Galvanized or epoxy-coated optional |
| Diameter | 25 mm – 51mm | Standard lengths customizable |
| Wall Thickness | 5 – 10 mm | Nominal value |
| Thread Type | R-thread | On request |
| Thread Standard | ISO 10208; ISO 1720 | On request |
| Hollow Diameter | 10–20 mm | For grouting and instrumentation |
| Yield Strength | 520 – 690 MPa | |
| Tensile strength | 650 – 840 MPa | |
| Elongation A5 | > 6% | |
| Length | 1.5 – 6 m standard | Custom lengths available |
| Coupler Compatibility | Standard SDA Couplers | |
| Surface Finish | Anti-rust Oil / Hot-dip galvanized / Epoxy-coated | Optional corrosion protection |
| Grouting Method | Simultaneous or post-grouting | Compatible with standard pumps |
Standards & Compliance
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ISO 9001 certified manufacturing
-
ASTM / EN material standards compliance
-
Compatible with international SDA systems
Notes for Export
-
Technical parameters can be customized per project specifications
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Can supply with OEM branding for international clients
-
Available in bulk and cut-to-length options
R25 Hollow Bar Anchor
| Nominal Outer Diameter | 25 mm |
|---|---|
| Nominal Inner Diameter | 13 mm |
| Ultimate Load | 150 kN |
| Yield Load | 200 kN |
| Nominal Weight | 1.90 kg/m |
R32L Hollow Bar Anchor
| Nominal Outer Diameter | 32 mm |
|---|---|
| Nominal Inner Diameter | 21 mm |
| Ultimate Load | 210 kN |
| Yield Load | 160 kN |
| Nominal Weight | 2.30 kg/m |
R32N Hollow Bar Anchor
| Nominal Outer Diameter | 32 mm |
|---|---|
| Nominal Inner Diameter | 19 mm |
| Ultimate Load | 280 kN |
| Yield Load | 230 kN |
| Nominal Weight | 2.70 kg/m |
R32S Hollow Bar Anchor
| Nominal Outer Diameter | 32 mm |
|---|---|
| Nominal Inner Diameter | 17 mm |
| Ultimate Load | 360 kN |
| Yield Load | 280 kN |
| Nominal Weight | 3.40 kg/m |
R38 Hollow Bar Anchor
| Nominal Outer Diameter | 38 mm |
|---|---|
| Nominal Inner Diameter | 22 mm |
| Ultimate Load | 500 kN |
| Yield Load | 400 kN |
| Nominal Weight | 4.70 kg/m |
R51L Hollow Bar Anchor
| Nominal Outer Diameter | 51 mm |
|---|---|
| Nominal Inner Diameter | 35 mm |
| Ultimate Load | 550 kN |
| Yield Load | 450 kN |
| Nominal Weight | 5.90 kg/m |
R51N Hollow Bar Anchor
| Nominal Outer Diameter | 51 mm |
|---|---|
| Nominal Inner Diameter | 32 mm |
| Ultimate Load | 800 kN |
| Yield Load | 630 kN |
| Nominal Weight | 7.40 kg/m |
