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Down The Hole Drilling DTH Drill Rod Pipe Drill Tube

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  • DTH Drill Pipe
  • BESTLINK

Down The Hole Drilling DTH Drill Rod Pipe Drill Tube

DTH drill pipe

Key features of a high quality DTH pipe are durability, accuracy and manage ability. Bestlink's pipes are made from cold drawn piping, providing a superior surface finish and tolerance compared to conventional pipes made from hot rolled piping. This drastically reduces the risk of scaling from the pipes entering the hammer, a major cause of premature hammer failure.

The joints are friction welded to achieve maximum strength,and the threads of the end-pieces are heat treated for optimum durability and strength of the thread profile. This not only ensures long thread life, but also makes coupling and uncoupling quick and simple, reducing drilling time.

Pipe diameter should be close to the hammer diameter to provide optimum flushing, reducing the chances of getting stuck.  

In most applications, Bestlink standard API threads will be the best choice. Bestlink also offers a wide range of subs and crossover subs to meet an array of demands, all manufactured to the same standards as the pipes.

 

The high pressure air is delivered to DTH hammer by DTH drill pipe, simultaneously it transfers the rotation and press force to the DTH hammer.

Standard DTH drill pipe:

Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm, 152mm

Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm

Thread: 2 3/8" API REG, 2 7/8" API REG, 3 1/2" API REG, 4 1/2" API REG, 2 3/8 API IF, 3 1/2 API IF

Special DTH drill pipe:

The drill pipe for Atlas Copco - Ingersol Rand T4, Schramm T64, Atlas Copco F6, L6 and L8, and the drill pipe for Sandvik DriltechD25/D40K

 

 

Drill Tube

Down The Hole Drilling DTH Drill Rod Pipe Drill Tube
 

 

A

C

J

D

Allowed

Approx

E

O D

Tool Joints

Length shoulder

Across

Pull Down

Weight unit

Width

(mm)

to flat

Flat

Unit.

3m long

Spanner flat

Connection

C1

C2

J1

J2

(mm)

(KNm)

kgs

(mm)


Φ76

API 2 3/8" REG

25.4

38.1

16

90.5

65

5.4

26.6

38.1

Φ89

API 2 3/8" REG

28.6

38.1

11.1

76.2

69.8

11.2

53.4

60.3

Φ102

API 3 1/2" REG

44.4

57.1

15.8

90.5

63.5

14.2

53.1

50.8

Φ114

API 3 1/2" REG

38.1

57.1

15.8

69.8

92.2

22.2

77.4

69.8

Φ127

API 3 1/2" REG

44.4

57.1

12.7

95.2

20.6

47

114

58.8s

Φ140

API 3 1/2" REG

44.4

57.1

12.7

95.2

120.6

47

114

50.8

Φ152

API 4 1/2" REG

76.2

85.7

19

120.6

130.1

52.9

127

60.3

 

 

Box-Box Adapters

Down The Hole Drilling DTH Drill Rod Pipe Drill Tube
 

 

Connection

Length

Length

Width

Std bore

Outside diameter

Across

Spanner

Spanner flats

Top

Bottom

Flat

Box up

Box down

C

J

E

d

D1

D2

F

A

B

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

API 2 3/8" REG

API 2 3/8" REG

219

57.1

50.8

38.1

88.9

88.9

69.85

API 2 7/8" REG

API 2 3/8" REG

219

69.85

50.8

38.1

114.3

88.9

98.4

API 2 3/8" REG

API 3 1/2" REG

128.6

57.1

50.8

38.1

88.9

114.3

69.8

API 3 1/2" REG

API 3 1/2" REG

241.3

69.85

50.8

44.45

114.3

114.3

98.4

API 3 1/2" REG

API 4 1/2" REG

269.8

88.9

50.8

58.7

114.3

146

98.4

API 2 7/8" REG

API 3 1/2" REG

241.3

69.85

50.8

44.45

114.3

51.7

98.4

API 4 1/2" REG

API 2 7/8" REG

250.8

76.2

50.8

44.45

114.3

146

98.4

 

 

Pin-Box Adapters

Down The Hole Drilling DTH Drill Rod Pipe Drill Tube
 

 

Connection

Length

Length

Width

Std bore

Outside diameter

Across

Spanner

Spanner flats

Top

Bottom

Flat

Box up

Pin down

C

J

E

d

D1

D2

F

A

B

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

API 2 3/8" REG

API 2 3/8" REG

140

50.8

65

24

88.9

88.9

69.85

API 2 3/8" REG

API 2 7/8" REG

134.9

69.85

50.8

31.75

88.9

88.9

69.85

API 2 3/8" REG

API 3 1/2" REG

146

39.7

50.8

25.4

114.3

88.9

98.4

API 3 1/2" REG

API 3 1/2" REG

101.6

39.7

50.8

44.45

127

127

98.4

API 3 1/2" REG

API 4 1/2" REG

134.9

39.7

50.8

52.4

114.3

146

98.4

API 2 7/8" REG

API 2 3/8" REG

134.9

39.7

50.8

31.75

88.9

88.9

69.85

API 2 7/8" REG

API 3 1/2" REG

134.9

39.7

50.8

44.45

114.3

114.3

98.4

API 2 7/8" REG

API 4 1/2" REG

174.6

100

50.8

44.45

114.3

146

98.4

 

 

Pin-Pin Adapters

Down The Hole Drilling DTH Drill Rod Pipe Drill Tube
 

 

Connection

Length

Length

Width

Std bore

Outside diameter

Across

Spanner

Spanner flats

Top

Bottom

Flat

Pin up

Pin down

C

J

E

d

D1

D2

F

A

B

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

(mm)

API 2 3/8" REG

API 2 3/8" REG

70

20

50.8

24

78

78

65

API 2 3/8" REG

API 2 7/8" REG

152.4

50.8

50.8

25.4

88.9

88.9

69.85

API 2 3/8" REG

API 3 1/2" REG

96

35

50.8

24

114.3

114.3

98.4

API 3 1/2" REG

API 3 1/2" REG

177.8

63.5

50.8

44.45

114.3

114.3

98.4

API 3 1/2" REG

API 4 1/2" REG

92

12.7

69.85

38.1

114.3

139.7

120.65

API 4 1/2" REG

API 4 1/2" REG

203.2

76.2

50.8

58.7

146

146

120.65



Bestlink Factory

Xiamen Bestlink Factory Co., Ltd  is  committed  to  provide  the  best  drilling  and  cutting machine,  tools and accessories products in marble and granite stone quarrying,  as well as in civil engineering application, especial demolition project. it is now a leading manufacturer of cutting and drilling equipment for the extraction of marble, granite  and ornamental stones in china.  

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