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Definition, Common Specification Table and Joint Size (II) of Drill Pipe for Coal Mine
Release time:
2020-03-21
Author:
Source:
It is mainly used in rock drilling and crushing, anchoring drilling, geothermal air conditioning hole, water well drilling, etc.
It is mainly used in rock drilling and crushing, anchoring drilling, geothermal air conditioning hole, water well drilling, etc. The pipe body is made of materials produced by well-known large-scale iron and steel enterprises in China. The two ends of the pipe body are internally thickened, tempered after friction welding, quenched and tempered after rough machining of drill pipe joints, and nitrided after surface finishing, which effectively prevents the failure probability of buckles, buckles broken, outer diameter expansion and cracking, etc., is more wear-resistant and easy to disassemble. All imported precision CNC lathes, custom molding knives for thread processing, all threads are configuredIn line with international standards of thread gauge, so the production of drill pipe quality is stable, reliable, greatly lengthened the life cycle.
We can not only produce API standard threaded drill pipes of different materials, lengths, diameters and wall thicknesses, but also customize drill pipes according to the material, length, wall thickness and thread required by customers.
|
Serial NumberNo. |
Diameter of drill pipe |
Thread standard |
Steel Grade |
Rod body wall thickness |
thickening form |
Length of drill pipe1 |
|
|
|
inch |
mm |
|
|
mm |
|
mm |
|
1 |
/ |
42 |
Flat/cone buckle |
DZ40,R780 |
6.2 |
inner thickening |
1000-5000 |
|
2 |
/ |
50 |
Flat/cone buckle |
DZ40,R780 |
6.5 |
inner thickening |
1000-5000 |
|
3 |
/ |
60 |
Flat/cone buckle |
DZ40,R780 |
7.1 |
inner thickening |
1000-5000 |
|
4 |
3 |
76 |
2-3/8”REG |
R780,G105s S135 |
6,8 |
inner thickening |
1000-5000 |
|
5 |
3 1/2 |
89 |
2 3/8" IF NC26 |
R780,G105,S135 |
6.5,8 |
inner thickening |
1000-5000 |
|
6 |
4 |
102 |
2 7/8" IF NC31 |
R780,G105,S135 |
8,9.19 |
inner thickening |
1000-5000 |
|
7 |
4 1/4 |
108 |
2 7/8" IF NC31 |
R780,G105,S135 |
8,9.19 |
inner thickening |
1000-5000 |
|
8 |
4 1/2 |
114 |
2 7/8" IF NC31 |
R780,G105,S135 |
8,10 |
inner thickening |
1500-6000 |
|
6 |
5 |
127 |
3 1/2" IF NC38 |
R780,G105,S135 |
8,10,12 |
inner thickening |
1500-6000 |
The rib drill pipe and grooved drill pipe produced by our company belong to the category of geological spiral drill pipe. The bone-assisted drill pipe is produced and processed on the basis of geological drill pipe, using high wear-resistant flat spiral blades and by advanced production techniques such as vacuum conditioning treatment and friction welding.
Prestress is fully automatic welded. The drill pipe body is made of high-quality alloy pot pipe for geological drilling. The drill pipe joint is made of 42CrMoA high-quality alloy structural steel. The high-pressure forming and grooving drill pipe is also called the body young bone drill pipe. The specifications and models are mainly 450mm, 463.5mm and 73mm, of which ◆ 63.5mm and 73mm models are more common. The grooving drill pipe is made of thick wall pipe body and iron grooves.
Groove drill pipe is mainly used in deep hole drilling of Songqin coal, with the advantages of fast slag discharge speed and small rotation resistance. When deep hole drilling, the integrated design process and advantages have better wear resistance and longer service life.
|
Serial Number |
Specification model mm |
Production process |
Connection form with drilling rig |
||
|
|
Diameter |
Length |
Thread form |
|
|
|
1 |
F50-42 |
500～3000 |
taper thread |
friction welding |
Clamping outer circle |
|
2 |
F63.5-42 |
500～3000 |
taper thread |
friction welding |
Clamping outer circle |
|
3 |
F63.5-50 |
500～3000 |
taper thread |
friction welding |
Clamping outer circle |
|
4 |
F73-50 |
500～3000 |
taper thread |
friction welding |
Clamping outer circle |
|
5 |
F73-63.5 |
500～3000 |
taper thread |
friction welding |
Clamping outer circle |
|
6 |
F90-63.5 |
500～3000 |
taper thread |
friction welding |
Equipped with active drill pipe |
|
7 |
Φ98-73 |
500～3000 |
hexagonal connection |
friction welding |
Equipped with active drill pipe |
|
8 |
F110-63.5 |
500～3000 |
taper thread |
friction welding |
Equipped with active drill pipe |
|
9 |
F130-63.5 |
500～3000 |
taper thread |
friction welding |
Equipped with active drill pipe |
|
10 |
F146-73 |
500～3000 |
taper thread |
friction welding |
Equipped with active drill pipe |
|
11 |
Φ250-89 |
500～3000 |
Flange connection |
Flange connection |
Direct rig |
Drill pipe of rock drilling rig
The six-party drill rod is widely used in rock drilling and blasting in mining, metallurgy, transportation, water conservancy and hydropower projects. Material selection of Shanghai Baosteel 23 CrNi3Mo, the overall vacuum conditioning treatment, thread processing using advanced imported CNC lathe, greatly improving the drill rod fatigue strength and impact.
It can be used with well-known rock drilling jumbo such as Atlas, Porter, Guhe, Gordon Denver, Ingersoll Rand, Montabert, etc. With reasonable matching, the continuous service life of drill pipe can reach about 3000 meters.
|
Drill Rod |
Length |
Outer diameter |
Weight |
Beneficiation Mine Model |
||
|
R32-Round32-R32 |
mm |
Inches |
mm |
Inches |
|
|
|
R32-Round32-R32 |
915 |
3 |
32 |
1 1/4 |
6.2 |
24R32-R32/46-0915-23 |
|
R32-Round32-R32 |
1220 |
4 |
32 |
1 1/4 |
8.0 |
24R32-R32/46-1220-23 |
|
R32-Round32-R32 |
1525 |
5 |
32 |
1 1/4 |
9.8 |
24R32-R32/46-1525-23 |
|
R32-Round32-R32 |
1830 |
6 |
32 |
1 1/4 |
11.6 |
24R32-R32/46-1830-23 |
|
R32-Round32-R32 |
2435 |
8 |
32 |
1 1/4 |
15.1 |
24R32-R32/46-2435-23 |
|
R32-Round32-R32 |
3050 |
10 |
32 |
1 1/4 |
18.7 |
24R32-R32/46-3050-23 |
|
R32-Round32-R32 |
3660 |
12 |
32 |
1 1/4 |
22.3 |
24R32-R32/46-3660-23 |
Key words:
Drill pipe, thread, welding, friction, 3 000,500, thickened, r780,32
