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
1000-6000
6.3
89
3 1/2
4
1000-6000
6.3
8.8
102
4
6.3
4000-6000
8.8
114
4 1/2
6.3
4000-9000
12.5
127
5
6.3
4000-9000
12.5
19
133
5 1/4
6.3
4000-9000
12.5
19
140
5 1/2
8.8
4000-9000
12.5
19
Minimum Order Quantity
N/A
Price
Packaging Details
Standard Export Delivery Package
Delivery Time
7days
Payment Terms
T/T
Supply Ability
Based on Detailed Order
In DTH drilling, the rock drilling bit is a continuation of DTH pipe, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length. DTH drilling enables drillers to reach hole depths that are double of what top hammer drilling can do. This is possible with the use of DTH Pipes and DTH Subs. Our down the hole drill pipe is manufactured based on the API standards. And according to specific requirements, we also provide this kind of drill pipe in different Chinese and American specifications. As for its advantages, it has features of big rigidity, good sealing capacity, flat outer structure, and low torque and resistance when rotating. As to the packaging, a bundle of drill pipes will be packed by one set of steel frame, and a bundle will have 9 to 40 drill pipes.
