T-Thread Hollow Anchor Bar / Mining Machines SDA All Thread Hollow Bar

FOB Reference Price:Get Latest Price
$1.80 - $10.00 / Meter | 50 Meter/Meters (Min. Order)
Type:
ANCHOR BOLT
Length:
1000mm~8000mm
Shipping:
Support Sea freight
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Overview
Quick Details
Place of Origin:
Shandong, China
Brand Name:
Miroc
Model Number:
R25,R32N/L,R32S,R38N,R51N,R51L, T76N, T76S
Material:
40Cr steel, STEEL
Color:
Based on customers
Advantage:
OEM/Factory price
Standard:
ISO
Capacity:
200KN-8000KN
Supply Ability
Supply Ability:
30000 Meter/Meters per Month self drilling anchor
Packaging & Delivery
Packaging Details
Wooden Box or Carton
Port
FOB BeiJing or TianJin

 Anchor bolt

 Anchor bolt means a rod that transfers the structures or geotechnical load to a stable rock 

formations, it consists of rod, drill bit, coupling, plate, grouting stopper and nut. It has been 

widely used in tunnling, mining, slope stabilization, tunneldiseases treatment and roof supporting 

of undergroundworks. It is for loose ground(clay, sand friable etc.) Hollow anchor rod is made of 

seamless tube with high strength.

 Features of hollow grounting anchor bolt 

 • Particularly suitable for difficult ground conditions.  

• A high rate of installation since drilling, placing and grouting can be performed in one single operation.  

• Self drilling system eliminates the requirement for a cased borehole.  

• Installation with simultaneous drilling and grouting possible.  

• Easy installation in all directions, also upwards.  

• Suitable for working in limited space, height and in areas of difficult access.  

• Simple post grouting system. • Hot-dipped galvanizing for corrosion protection  

 Applications in Tunneling & Ground Engineering  

 • Radial bolting  

• Slope stabilization  

• Forepoling  

• Micro injection pile  

• Face stabilization  

• Temporary support anchor  

• Portal preparation  

• Soil nailing 

 Self-Drilling Anchor Bolt Description

 

 

R25N

R32N

R32S

R38N

R51L

R51N

T76N

Outside Diameter (mm)

25

32

32

38

51

51

76

Internal Diameter (mm)

14

19

16

19

36

33

52

Ultimate Load Capacity (kN)

200

280

360

500

550

800

1600

Yield Load Capacity (kN)

150

230

280

400

450

630

1200

Tensile Strength, Rm (N/mm2)

800

800

800

800

800

800

800

Yield Strength, Rp0.2 (N/mm2)

650

650

650

650

650

650

650

Weight (Kg/m)

2.3

3.2

3.6

5.5

6.5

8.0

16.0

Steel Grade

EN10083-1 (Alloy Structure Steel)

Compared to carbon steel, alloy structure steel has high anti-corrosion capacity and high mechanical.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drill Bit

 

 

R25N

R32N

R32S

R38N

R51L

R51N

T76N

T76S

diameter(mm)

41,51

51,76,90

90,100,110,115,130

130,150,160,180,200

Hardened cross bit

(EX)

Hardened cross bit for loose to medium dense condition with small boulders.

Tungsten cross bit

(EXX)

TC cross bit for soft to medium rock for mations

Hardened button bit

(ES)

Hardened buuton bit for unconsolidated rock with boulders.

Tungsten carbon button bit

(ESS)

Button bit with TC inserts for medium rock for formations.

Hardened arch bit

(EC)

Hardened drill bit with optimized geometry for unconsoliddated soil 

with small boulders.

Tungsten carbon arch bit

(ECC)

TC drill bit with optimized geometry for soft to medium rock formations.

Hardened drop center bit

(EY)

Hardened cross bit for loose to medium dense ground conditions

TC drop center bit

(EY)

TC drill bit for soft to medium rock formations.

Casting clay bit

(EW)

Casting clay bit with optimized geometry for very soft to soft caly.

 Machined steel bit or Casring steel bit

 

T-Thread Anchor Bolt Technial Data

 

Bar Type

Outside Diameter

(mm)

Inside Diameter

(mm)

Cross section 

(mm2)

Ultimate Load

 KN

Yield Point 

KN

Weight

(kg/m)

Thread Left/

Right Hand

30/11

30

11

446

320

260

3.3

Lift or right

30/14

30

14

395

260

220

2.9

Lift or right

30/16

30

16

382

220

180

2.7

Lift or right

40/16

40

16

879

660

525

7.0

Lift or right

40/20

40

20

726

539

430

5.6

Lift or right

52/26

52

26

1337

929

730

10.0

Lift or right

73/53

73

53

1160

1630

970

12.3

Lift or right

73/56

73

56

1094

1414

785

11.1

Lift or right

73/45

73

45

2265

1630

1180

17.8

Lift or right

 

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