Self Drilling Hollow Rock Anchor Bolt System

• Customization: Available
• Sizes: 2 Inch to 3 Inch
• Model: R25 R32 R38 R51 T40 T76
• Model NO.: R25 R32 R38 R51 T40 T76
• Color: as Request
• Quantity: Small Quantity Is Acceptable
• Transport Package: Cartons + Ply-Wooden Cases for Exporting
• Specification: Grade A
• Trademark: sollroc
• Origin: Changsha, Hunan
• HS Code: 82071300
• Production Capacity: 50000 Per Month

Product Description

About us:
We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.


Application:
1. R thread self drilling anchor bolt is suitable for broken rock, loose soil and conditions which are difficult to drill holes, such as fracture zones, decayed rock, gravel, sandy gravel, backfill ground.
2. Used for permanent support for tunneling.
3. In slope stabilization, rock bolts and soil nails can be used to maintain and strengthen soil and rock.
4. Used for micro pile reinforcement. Micro pile can transmit structural load to foundation, and then limit the deformation of buildings.
5. Drill bits can be used for differently according to the rock conditions.
 
Features:
1. Casing free in the operation. Anchor bar is also a drill pipe which is convenient and time-saving.
2. Drilling and grouting can be done simultaneously. With good grouting spread radius and reliable anchoring quality, fractures can be filled effectively.
3. The anchor bar with standard full thread can be cut according to your requirement. The cut anchor bars can be connected by couplers. It's suitable in narrow work space.
4. Due to the continuous R-thread and T-thread, self drilling anchor bolt has higher bonding stress.
          
                                                                             

R -thread Hollow Anchor Bar
Size	Outer Dia. mm	Inner Dia. mm	Ultimate Load   KN	Yield Load  KN	Weight Kg/m
R25N	25	12	200	150	2.3
R32L	32	20	210	160	2.9
R32N/1	32	20	280	230	2.9
R32N	32	18	280	230	3.4
R32S/1	32	18	360	280	3.4
R32S	32	14.5	360	280	4.1
R38N/1	38	22.5	500	400	4.8
R38N/2	38	21	500	400	5.5
R38N	38	19	500	400	6
R38S/1	38	18	550	430	6.2
R51L/1	51	37.5	550	450	5.6
R51L	51	36	550	450	7
R51N/1	51	34	800	630	7.5
R51N	51	33	800	630	8.5

 

Product photo:


Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.


Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.



Production time:
Generally need 15-25 days