Original
By certification 
Subs for DTH Drill Rods
DTH Drill Rods (Tubes or Pipes) & Sub Adapters
General Introduction:
DTH drill rods (also called as drill tubes or drill pipes) are the mechanism to transmit impact force and rotation torque to DTH hammers and bits, as well as offer pass for the air flow.
In principle, the ligther the rod is, the better it is for the drilling operation. So a thinner one is always preferable than a thicker one if other parameters were the same. While in the mean time, the yield strength and the tensile strength must also be taken into accounts, which means relatively rod wall thickness would be needed to obtain enough strength. Of course, once the thickness is rigidly requested as thin as possible to minimize the drill string weight, there is also another method to get optimum drill tubes that using better grade steels.
Roschen has DTH drill rods with several different thickness designs for each diameter, made from different grade steels for selection. So, in practice of field drilling, under different condition, there maybe in need of different kinds of drill rods for particular application. For example, the thicker ones with general high quality grade steel for drilling hole of average depth, such as blasting holes; and the thinner ones with better grade steel for drilling hole of very deep, such as drilling for ground thermal. Moreover, Roschen DTH drill rods are also well heat-treated, precision manufactured, and friction welded.
DTH Drill Rods:
Diameter |
Length |
Connection Thread |
Wall Thickness |
|||
mm |
inch |
mm |
Foot |
mm |
inch |
|
60 |
2 3/8 |
1000 ~ 4500 |
3 3/8 ~ 14 3/4 |
T42 x 10 x 2 |
5 ~ 8 |
13/64 ~ 5/16 |
76 |
3 |
1000 ~ 4500 |
3 3/8 ~ 14 3/4 |
2 3/8" API REG |
5 ~ 8 |
13/64 ~ 5/16 |
89 |
3 1/2 |
1000 ~ 7620 |
3 3/8 ~ 25 |
2 3/8" API REG/IF |
5 ~ 12 |
13/64 ~ 15/32 |
102 |
4 |
1000 ~ 9140 |
3 3/8 ~ 30 |
2 3/8" API REG, 2 7/8" API IF, 3 1/2" API REG |
6.5 ~ 20 |
1/4 ~ 25/32 |
108 |
4 1/4 |
1000 ~ 9140 |
3 3/8 ~ 30 |
2 3/8" API REG, 2 7/8" API IF, 3 1/2" API REG |
6.5 ~ 20 |
1/4 ~ 25/32 |
114 |
4 1/2 |
1000 ~ 10670 |
3 3/8 ~ 35 |
2 7/8" API IF, 3 1/2" API REG |
6.5 ~ 20 |
1/4 ~ 25/32 |
127 |
5 |
1000 ~ 10670 |
3 3/8 ~ 35 |
3 1/2" API REG |
8 ~ 20 |
5/16 ~ 25/32 |
133 |
5 1/4 |
1000 ~ 10670 |
3 3/8 ~ 35 |
3 1/2" API REG |
8 ~ 20 |
5/16 ~ 25/32 |
140 |
5 1/2 |
1000 ~ 10670 |
3 3/8 ~ 35 |
3 1/2" API REG |
10 ~ 22 |
25/64 ~ 7/8 |
146 |
5 3/4 |
1000 ~ 10670 |
3 3/8 ~ 35 |
3 1/2" API REG |
10 ~ 22 |
25/64 ~ 7/8 |
152 |
6 |
1000 ~ 10670 |
3 3/8 ~ 35 |
4 1/2" API REG |
10 ~ 22 |
25/64 ~ 7/8 |
| Subs or Adapters Specifications | |||||
Type |
Diameter |
Length |
Connection Thread |
||
mm |
inch |
mm |
inch |
API REG/IF |
|
Pin to Box |
59 ~ 146 |
2 3/8 ~ 5 3/4 |
120 ~ 235 |
4 23/32 ~ 9 1/4 |
2 3/8", 2 7/8", 3 1/2", 4 1/2" |
Pin to Pin |
90 ~ 115 |
3 1/2 ~ 4 1/2 |
70 ~ 97 |
2 3/4 ~ 3 5/8 |
2 3/8", 2 7/8", 3 1/2", 4 1/2" |
Box to Box |
77 ~ 205 |
3 ~ 8 1/8 |
200 ~ 270 |
7 7/8 ~ 10 5/8 |
2 3/8", 2 7/8", 3 1/2", 4 1/2", 6 5/8 |
For brochures and more products information, please contact us to vertify your company information and tell us the details.
How to order ?
DTH Drill Rods: Length + Diameter + Connection Thread + Wall Thickness
Subs Adapters: Type + Connection Thread + Length + Diameter
FAQ:
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: What are your main products, and used for?
A: Our products include core barrel, casing, drill rod, drill rig and other drilling parts.
They are used for mineral exploration, geological drilling.
Q: If the tool joint the buckle, the screw is not how to do?
A: You can tap and screw, this tool joint is not easy to take over tripping in use.
Q: How about the delivery terms?
A:
1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By sea, train.
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer has 32 years of history we offer prompt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
Q: Where is your factory located in?
A: Our factory is located in Wuxi city, China.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, our always make a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001.
