Office hours(GMT+8): 8:30-18:00
   No.1703, Building 3, No. 1 Fenghua Road,High-tech,District , Luoyang , China (Henan)Pilot Free Trade Zone, Henan Province, P.R. China.
Large Diameter Anchor Bolt
Large diameter anchor bolt has sizes include T73, T76, T103, T111, T127, T130.

Large diameter anchor bolt is a type of self drilling anchor bolt, which has a larger diameter than other common sizes. It is usually applied to pipe shed and micropile.

For pipe shed


Large diameter anchor bolt is applied for constructions of shallow buried parts of tunnel portal, fault zones and sand belt in tunnel, collapsed tunnel and urban tunnel. During the construction, it will increase the safety of tunnel portal and improve the stability of tunnel because of the advanced support.

1. Reduce surface subsidence and preventing collapse effectively.
2. Improve bending strength and controlling inclination.
3. Large diameter anchor bolt can be applied to fault zones of excavation and tunnel portal.
4. It will improve wall rock and make good adhesive strength by high-pressure grouting.

For micro pile


Large diameter anchor bolt can be drilled into any ground conditions through clay, sand and rock, so it has a various applications. With the stabilization of micro piles, it can decrease the influence of settlement action to buildings and reinforce the foundation effectively.


1. There is only little influence on original building and no disturbing to normal use when constructing.
2. There will be very low noise and small vibration when constructing. 
3. It can drill through kinds of obstacles, and is suitable for different ground conditions.
4. It has a full thread bar, which is simple to connect and suitable for narrow space.
5. It can form composite foundation between two piles with cushion.

Large Diameter Anchor Bolt
Size Outer Dia.
Inner Dia.
Ultimate Load
Yield Load
T73/56 73 56 1194 785 R 11.1
T73/53 73 53 1160 970 R 12.3
T73/45 73 45 1630 1180 R 17.8
T73/35 73 35 1980 1355 R 21.2
T76/51 76 51 1600 1200 L/R 16.5
T76/45 76 45 1900 1500 L/R 19.7
T103/78 103 78 2282 1800 R 24.9
T103/51 103 51 3460 2750 R 43.4
T111/82 111 82 2640 2000 R 25
T111/75 111 75 3650 2750 R 34.5
T127/103 127 103 2320 2030 R 28.6
T130/60 130 60 7940 5250 R 75.0