R32 Self Drilling Anchor Bolts
R32 Self Drilling Anchor Bolts, diameter is 32mm, the diameter to be chamfered is 35mm, and the chamfer length is 100mm. R32 Self Drilling Anchor Bolts are suitable for underground engineering construction such as coal mine shafts, oil fields, subways, etc.
Description
R32 Self Drilling Anchor Bolts, diameter is 32mm, the diameter to be chamfered is 35mm, and the chamfer length is 100mm.
R32 Self Drilling Anchor Bolts are suitable for underground engineering construction such as coal mine shafts, oil fields, subways, etc.
Self-drilling anchor bolts use good thick-walled seamless steel pipe materials, perfect and fast surface thread forming technology, and well-made accessories, which truly realizes the unification of self-drilling anchor bolts’ drilling, grouting, anchoring and other functions.
Self-drilling anchor bolts are a new type of anchoring material. Self-drilling anchor bolts can drill holes by themselves, which greatly reduces the difficulty of installation and labor intensity. Because the self-drilling anchor bolt uses a hydraulic arm to drill deep into the soil layer and then tensions the anchor bolt, self-stress is generated, which greatly improves the bearing capacity of the anchor bolt. The anchoring area of the self-drilling anchor bolt is larger than that of ordinary anchor bolts, and the bearing capacity is higher.
Features of R32 Self Drilling Anchor Bolts:
R32 Self Drilling Anchor Bolts (32mm outer diameter) are hollow grouting anchor bolts that integrate drilling, grouting, and anchoring, suitable for complex formations such as fractured, loose, and easily collapsing boreholes.
1. Integrated Drilling, Grouting, and Anchoring: The R32 Self Drilling Anchor Bolt body serves as both the drill rod and the anchor bolt. Grouting is performed simultaneously through the hollow rod body during drilling, eliminating the need for casing and achieving drilling, grouting, and anchoring in a single operation, resulting in high construction efficiency.
2. High Load-Bearing Capacity: R32 Self Drilling Anchor Bolts typically have a yield load of 160–320 kN, an ultimate tensile load of 210–405 kN, and an elongation ≥8%. They utilize high-strength alloy steel (such as 42CrMo) with rolled threads.
3. Adaptable to Complex Geological Formations: Equipped with cross/ball-tooth alloy/mud drill bits (outer diameter 51–76mm), it can traverse difficult-to-drill formations such as mixed fill, gravel, pebbles, and strongly weathered rock, reducing the risk of borehole collapse.
4. Flexible and Adjustable: The R32 Self Drilling Anchor Bolts feature a full-length corrugated thread, supporting arbitrary cutting and splicing for extended lengths, facilitating construction in confined spaces (such as basements, foundation pits, and tunnel faces).
5. Controllable Grouting Compaction: The bottom grout return structure and grout stopper design ensure that grout fills the surrounding rock fissures from the drill bit upwards, resulting in excellent consolidation; grouting pressure is typically ≤5.0MPa.
6. Optional Corrosion Protection: Hot-dip galvanizing, epoxy coating, or double anti-corrosion treatment are available, suitable for corrosive or groundwater environments.
Widely used in slope protection, foundation pit reinforcement, tunnel pre-drilling/toe anchoring, and existing building reinforcement, R32 Self Drilling Anchor Bolts are a mainstream self-drilling anchoring system that replaces traditional casing drilling, improving efficiency and safety.
Applications of R32 Self Drilling Anchor Bolts:
1. Slope Engineering: R32 Self Drilling Anchor Bolts are used for steep slopes, rockfall protection, road cut reinforcement, and flood damage repair, especially suitable for soil layers, weathered rock, or gravelly soil where conventional drilling is not feasible.
2. Tunnels and Underground Engineering: Pre-drilling support, toe anchors, roof system anchoring, and tunnel portal pipe roofs form a load-bearing arch in shallow buried sections or weak surrounding rock, controlling settlement and collapse.
3. Foundation Pit and Foundation Support: R32 Self Drilling Anchor Bolts are used to balance earth pressure and constrain soil, suitable for construction in confined spaces (such as basements and under bridges), and can replace casing drilling, improving efficiency and reducing costs.
4. Mine Roadways: Support for underground chambers and roadways in non-coal metal mines, suitable for reinforcing fractured or loose surrounding rock.
5. Special Foundation Treatment: R32 Self-Drilling Anchor Bolts are used for anti-buoyancy anchor bolts (limited to low-permeability strata), wind turbine tower foundations, bridge abutments, and coastal protection. However, in high-pressure or highly corrosive environments, anti-corrosion measures (such as hot-dip galvanizing or epoxy coating) are required.
Specifications of the Self Drilling Anchor Bar:
|
Size
|
Outer Dia.(mm)
|
Ultimate Lad(kN)
|
Yield Load(kN)
|
Weight(kg/m)
|
|
25
|
200
|
150
|
2.35
|
|
|
32
|
210
|
160
|
2.8
|
|
|
38
|
500
|
400
|
5.45
|
|
|
51
|
800
|
630
|
8.15
|
|
|
T30L
|
30
|
220
|
180
|
2.9
|
|
T40S
|
40
|
660
|
525
|
6.8
|
|
52
|
929
|
730
|
10.2
|
|
|
T73L
|
73
|
1160
|
970
|
13.2
|
|
76
|
1900
|
1500
|
19.7
|
|
|
T103N
|
103
|
2270
|
1800
|
23.5
|
|
T111N
|
111
|
3650
|
2750
|
34.5
|
|
T127L
|
127
|
2400
|
1810
|
30.5
|
|
T130S
|
130
|
7940
|
5250
|
78
|
|
T150S
|
150
|
8400
|
5600
|
108
|
|
T200S
|
200
|
14230
|
9500
|
183
|
PRODUCT DISPLAY
|
SELF DRILLING ANCHOR BAR
|
||||
|
category
|
model
|
Outer diameter (mm)
|
suitable for geological conditions
|
|
|
Cross all-steel drill
|
HSR32/51
|
51
|
Mudstone, gravel soil, chalk soil, lime soil, calcareous clay, artificial fill, soft mudstone
|
|
|
HSR32/76
|
76
|
|||
|
Cross alloy drill
|
HSR32/51
|
51
|
Soft to medium hard rock, e.g. gravel with boulders, fractured rock formations, unreinforced concrete
|
|
|
mud drill
|
HSR32/76
|
76
|
Clay, soft soil, sandy soil, gravel, mixed fill
|
|
|
Ball tooth all-steel drill
|
HSR32/51
|
51
|
Crushed formations, soft sandstone, limestone, gravel, soft rock formations
|
|
|
HSR32/76
|
76
|
|||
|
Ball tooth alloy drill
|
HSR32/51
|
51
|
Soft to medium hard weathered rock formations, boulders, gravel such as mudstone, schist, volcanic rocks, etc.
|
|
APPLICATION
Mainly used in slope engineering, foundation and foundation engineering, tunnels and underground engineering,etc., such as various slope support, foundation pit support, tunnel pipe shed support, basic support of transmissiontowers or wind power towers, old Building repairs and reinforcement of existing structures, etc.
PACKING & DELIVERY
Shipping By Sea
1. Standard packaging
2. Packaging according to customer requirements
FAQ
Q: Can I get samples before order ?
A: Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.
Q: Can I go to your factory to visit?
A: Of course, we welcome customers from all over the world to visit our factory.
Q: What product information do I need to provide?
A: You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Q: Does the product have quality inspection before loading?
A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept third party inspection.
Q: How do we trust your company?
A: We specialise in steel business for years, headquarter locates in Liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO9001 certificate, quality can be guaranteed.
