About us:
We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.
Product specifications:
| DTH drill pipes specifications |
Outer diameter |
Thread |
Wall thickness
mm |
Length
mm |
| mm | inch |
| 76 | 3 | API 2 3/8 REG
API 2 7/8 REG
API 3 1/2 REG
API 4 1/2 REG
API 2 3/8 IF
API 2 7/8 IF
API 3 1/2 IF
API 4 1/2 IF
BECO 3 1/2" | 4.0
6.3 | 1000-6000 |
| 89 | 3 1/2 | 4.0
6.3
8.8 | 1000-6000 |
| 102 | 4 | 6.3
8.8 | 4000-6000 |
| 114 | 4 1/2 | 6.3
12.5 | 4000-9000 |
| 127 | 5 | 6.3
12.5
19 | 4000-9000 |
| 133 | 5 1/4 | 6.3
12.5
19 | 4000-9000 |
| 140 | 5 1/2 | 8.8
12.5
19 | 4000-9000 |
We can also provide related products DTH hammers, ODEX system, symmetrix systems, slide block drilling systems, etc and DTH drilling pipes for various thread API REG, API IF, BECO, etc
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.