• Self-drilling Anchor Rock Bolt
• R /T thread
• left/right hand thread
• R25N --T76S
• Customized  
• Simultaneous Drill and  Grout Installation
• Combines both operations  into a single construction cycle, enabling  high rates ofproduction.
• Fully Threaded Rod Sections
• Continuous thread ensures  that rods can be cut and coupled at  any point.
• No Casing Required
• Can be installed into loose  or collapsing soils without the need for  a temporary casing tosupport the borehole.
• Self-Drilling Injection Anchor
• Suitable for a range of applications,  including: Soil Nails, Micro Piles,  Ground Anchorsfor temporary works,

• SDA (IBO) is a kind of safety product.
• Safe products is the most important thing of engineering safety.
• We only produce safe products.
• Security is not just lip service ,   SGS report ... 
                                            

• Established in the early 1990s,25 years  experience in  manufacturering  Self-drilling Anchor Rock Bolt
• The first and best manufacturer of SDA ( Self-drilling Anchor Rock Bolt ) in China
•  ONTON Techology Co., Ltd. Is the main compiling units of the standard named "Technical Terms of Hollow Anchor Bolts" >>>
• We participate in the ministry of railways Self-drilling Anchor Rock Bolt standards and almost all of the high-speed railway construction in china.
• OEM  accepted >>>

  If you have any question of Hollow SDA , please feel free to contact:

  Tiger Tel: 0086-028-87678353  

 FAQ  for  Hollow SDA

1,what is SDA?

 Self-Drilling Anchor   

 2, The application of the SDA?

mine,tunnel,slope,foundation pit

3,What Is Our Transportation Way?

By sea. 

By Air.

By  Land.

4, what is A_gt?

elongation of a metallic reinforcement

more>>>