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Jining Dongda Mining Machinery Co., Ltd.

China Manufacturer with main products: Mining Feeder, Mining Pump, Mining Door, Mining Machinery Parts, Mining Proof-Explosion Motor, Drilling Equipment, Mining Supporting...

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Grouting anchor bolt


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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Specifications

Introduction:

 

Self drilling rock grouting anchor is a bolting solution for unstable ground conditions such as sand, gravel, silt, and clays, and in soft to medium fractured rock formations.

 self drilling rock grouting anchor consists of anchor nut, anchor plate, anchor coupler, hollow anchor bar, sacr  ificial drill bit

 self drilling rock grouting anchors are successfully used for anchoring in poor ground, cohesive and non-  cohesive soils, and in case of unstable boreholes.

 

 

Parameter:

standard

outside diameter

average internal dia

ultimate load capatity

yield load

tensile strength

yield strength

theorical weight

thread type

 

mm

mm

kn

kn

N/mm2

N/mm2

kg/m

 

R25N

25

13

200

150

720

560

2.4

ISO10208

R32N

32

18.5

280

230

720

560

3.2

..

R32S

32

15

360

280

740

560

4.0

..

R32L

32

20

220

160

740

560

2.9

..

R38N

38

19

500

400

740

560

5.8

..

R51L

51

36

550

450

740

560

6.8

..

R51N

51

33

800

630

740

560

7.8

..

T76N

76

51

1600

1200

740

560

16.5

ISO1720

T76S

76

45

1900

1600

740

560

20.0

 ..

T30/11

30

11

320

260

740

560

3.2

 ..

T40/16

40

16

660

525

740

560

7.2

 ..

 

Main applications

* Road / rail construction and maintenance

 

* Tunneling & Mining

 

* Rural environments

 

* Private residences

 

* Special foundations

 

* Avalanche protection structures

 

System description

1, hollow core with continuous hot-rolled outside thread

2, application as injection anchor without casing, especially for non-stable boreholes

3, self-drilling installation, utilization of the anchor bar as drill rod with a single-use drill bit

4, easy extension of the anchor bars by anchor coupler

5, grouting or development of the grout body either simultaneously with drilling using a rotary injection adapter or afterwards

6, assembly of the anchor head with the anchor plate and the nut, stressing and locking

 

Advantage:

1, easy and similar operation principle for different rock mass and soil conditions

2, drilling, anchoring and grouting can be performed in one single operation

3, no pre-drilling of a borehole by using a casing tube and extension rods with subsequent anchor installation necessary

4, minor space requirement for the accomplishment of anchoring

5, optimized machinery and manpower requirements

6, basic dimensioning of the required anchoring forces by choosing the appropriate anchor type

7, optimum bonding of the profiled anchor rod and the grout

8, adjustment of the drill bit design and diameter to different rock mass and ground conditions

9, simple anti-corrosion method available

10, appropriate for temporary or permanent applications

 

 

 

Service Process

Service Guarantee

  • Free Service Charge

    ECVV doesn't charge any service fee to Buyers for buying this product.

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  • Product Quality Commitment

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  • Deposit Service Commitments

    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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