R25N Self-Drilling Rock Anchor Bolt

ONTON R25N Rock Bolt

Product Description:

• Self drilling  Anchor

• R /T thread

• Customized  

• Simultaneous Drill and Grout Installation

• Combines both operations into a single construction cycle, enabling high rates of production

• 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 

• It's widely used in many projects of the subway, high-speed rail ,railways, Soil Nails, Micropiles ,highways and hydropower stations, with good popularity and quality

• 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

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 can supply products according to your requirements




Why choose us?














• 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.

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 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 

Certifications:



Customize service:


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

Custom process:



Packaging & Shipping:



Generally: 50 pcs/bunndle,outer with woven bags or as requirement.

After-Sales Service:

•  If you have any question of our products, please feel free to contact: 

   neolau@ontonbolt.com