Self Drilling Anchor Rock Bolt R25 series

Self Drilling Anchor Rock Bolt

Chinese manufacturer of Self Drilling Anchor Rock Bolt

Description

• Feature 

  ONTON^® Self Drilling Anchor Rock Bolt (Hollow Bar Anchor, SDA) features a wide range of applications such as soil nails, micropiles, rock bolts, or ground anchors. It is applied to self-drilling ground control solution used in Civil Engineering and underground construction.

     You can see its application in Deep Foundation like micropiles, Earth Retention like soil nail walls. Self-Drilling is easy drilling than CFA (Continuous Flight Auger, or Auger Cast piles.).

• Applications

  Civil Engineering	Underground Mining and Tunneling
  1. Pile foundation	1. Stabilization of tunnel portals, trenches, and cut-and-cover areas
  2. Slope and embankment stabilization	2. Forepoling
  3. Reinforcement of excavation pits and retaining walls	3. Face stabilization
  4. Foundation of pylons and wind mills	4. Radial rock bolting
  5. Anchorage of avalanche protection structures and noise barriers	5. Roof and rib bolting
  6. Injection works	6. Injection works

   

• Technical Data

      Typical technical performance for R25 Self Drilling Anchor Rock Bolt:

R25N	Outside diameter ( mm)	Average internal diameter ( mm)	Aver.cross sectional area  (mm2)	Ultimate load capacity ( kN )	Yield load capacity ( kN )	Average tensile strength Rm ( N/ mm2 )	Average yield strength  Rp0,2 ( N/ mm2 )	Weight        (kg/m)
	25	15	267	200	150	750	580	2.1
	We supply customized self drilling anchors on request.




Now, you will think these specifications are all same to each factories. 




So, Why choose us?




First, SDA (IBO) is a kind of Safety product

Safety Self Drilling Anchor Rock Bolt must be High capacity with energy absorbing:



Tensile Curve of Rock Anchor Bolt

• 
  

  Drilling is only the beginning of Reinforcement Anchoring, reliable support is the core value.    

  VS.    Just for drilling (sometimes even sudden fracture when drilling).

• A_gt > 5%, High homogeneous elongation ability can bear large defromation of surrounding rock without failure.    

  VS.    Just meeting the strength index of the SDA. Confuse the concepts of plasticity index.

• R_m/R_p0.2 > 1.2, High strength reserve provides ample safety coefficient for projects.    

  VS.    The strategy is to reduce the cost by sacrificing quality.

      Second, Safety product must be Stable

Mass Production Stability

• Stability and Uniformity of products assure the quality of project engineering.    

  VS.    Unstable products leave a nightmare and hidden troubles to construction staff and users. 




Third, Safety product must be precision



• Assembly of High quality, high precision, high performance Self-Drilling Anchors and accessories are reliable.    

  VS.    Crude hollow anchor bars with low-quality is the humiliation to "Made in China". It only exports to "jerry builting" in the world.

• Self Drilling Anchor 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.




Certifications:









A perfect balance of strength and ductility - in accordance with EU and US standards (EC2, EN14199, ASTM, FHWA, etc.).



ASTM F432-13
All roof bolts and accessories manufactured by ONTON meet or exceed ASTM F432-13 specifications.




Customize service:





Good Ductility checked on site by a bending test to 180 degrees, good machinability and drillable:






Purchasing process:






Packaging & Shipping:



Generally: 50 pcs anchor rock bolt per bundle, wrapped in woven bags or as requirement.




Company Information:



• Established in the early 1990s.

• 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 Chinese Railway Standard named "Technical Regulations for Hollow Bolt".

• 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. 

Other Components of Hollow Bar Self Drilling Anchor System:

Drill Bits  - Anchor Plates - Muttern Nuts - Hollow Bar Connetion Coupler