China 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. SANSUNG'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, SANSUNG standard API threads will be the best choice. SANSUNG 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


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

More Specifications:
DTH roddia(mm)length(mm)ThreadDTH pipe/Roller rodsΦ421025Z32*8Φ511025Z42*101050Z42*10Φ51(friction welding)1250K49/52*3Φ601025K52*31025Z48*101250K52*32000Φ60(friction welding)1250Z42*10Φ601500Z48*10Φ76(wall thickness=6mm)1000API 2 3/8"REG1500020003000Φ76(wall thickness=8mm)2000Φ76(wall thickness=6mm)3070Z65*103100API 2 3/8"REGΦ76(wall thickness=8mm)3070Z65*10 3100API 2 3/8"REGΦ89(wall thickness=8mm)1500API 2 3/8"REG30004000Φ1023000API 2 7/8"REG40005000Φ1089000Z75*10Φ114(wall thickness=12mm)6300Z75*10/Z85*2075206580Φ133(wall thickness=12mm)8500API 2 7/8"REG9000Φ176(wall thickness=20mm)9250API 4 1/2"REGΦ219(wall thickness=25-30mm)8870API 6 5/8"REG15000Φ273(wall thickness=25-30mm)887015000Rod stabilizerΦ2191390Φ2501390
Box-Box Adapters


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


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


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