Introduction Of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt
* High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt is widely used in road / rail construction and maintenance
* Rock Bolt can be used for Tunneling & Mining
* Rural environments
* Private residences
* Special foundations
* Avalanche protection structures
Alloy Drill: made of high-quality alloy by precision technology, with strong hardness and toughness, penetrating force can drill into a variety of rock
Bolt Body: The most important component of the assembly, plays a major role in drilling and anchoring.
Connection Sleeve: Play the role of
connection when the bolt needs to be lengthened.
Pad: can withstand greater
surrounding rock stress.
Screw Nut: The stress of surrounding rock can be concentrated on the pad.
Parameter of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt
|
Description
|
unit
|
R25
|
R32N
|
R32N
|
R32S
|
R32SS
|
R38N
|
R51N
|
T30N
|
T40N
|
T52
|
T76N
|
|
Outer Diameter
|
mm
|
25
|
32
|
32
|
32
|
32
|
38
|
51
|
30
|
40
|
52
|
76
|
|
Inner Diameter
|
mm
|
14.5
|
21.5
|
20
|
20
|
18.5
|
23
|
36
|
15
|
21
|
26
|
52
|
|
Area
|
mm2
|
255
|
331
|
369
|
369
|
407
|
548
|
892
|
331
|
803
|
1274
|
1991
|
|
Ultimate Tensile Load
|
KN
|
200
|
280
|
280
|
360
|
400
|
500
|
800
|
260
|
660
|
929
|
1660
|
|
Yield Load
|
KN
|
150
|
230
|
230
|
280
|
330
|
400
|
630
|
220
|
525
|
730
|
1200
|
|
Ultimate Tensile Strength
|
Mpa
|
784
|
846
|
758
|
976
|
983
|
912
|
897
|
785
|
822
|
729
|
837
|
|
Yield Strength
|
Mpa
|
588
|
695
|
623
|
759
|
811
|
730
|
706
|
665
|
654
|
573
|
628
|
|
Nominal Weight
|
kg/m
|
2
|
2.6
|
2.85
|
2.9
|
3.2
|
4.2
|
7
|
2.6
|
6.3
|
10
|
15
|
Pictures of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt
