KSQ Technologies (Beijing) Co. Ltd
KSQ Technologies (Beijing) Co. Ltd At KSQ We always look at the business in your point of view.
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High strength steel High strength steel DTH Sub Female-Female
Description
In DTH drilling, the rock drilling bit is a continuation of the shank, 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.
• High grade steel used on thread area and main DTH sub body
• Automated welding and machining processes employed
Color: Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
Type: DTH Sub Female-Female
Applications
• Underground mining
• Quarry benching operations
• Water well drilling
Competitive Advantage
High strength steel with high fatigue strength and excellent wear resistance
specification
1
<
| Part Number | A Thread | B Thread |
Diameter A (mm) |
Diameter A (inch) |
Diameter B (mm) |
Diameter B (inch) |
| 4148301589 | 2 3/8" API Reg | 2 3/8" API Reg | 77 | 3 | 77 | 3 |
| 4148301590 | 2 3/8" API Reg | 2 3/8" API Reg | 90 | 3 1/2 | 90 | 3 1/2 |
| 4148301591 | 2 3/8" API Reg | 2 7/8" API Reg | 90 | 3 1/2 | 90 | 3 1/2 |
| 4148301592 | 2 3/8" API Reg | 3 1/2" API Reg | 115 | 4 1/2 | 115 | 4 1/2 |
2
<
| Product Code and Brief Description |
Length (mm) |
Length (inch) |
Wrench Flat (mm) |
Wrench Flat (inch) |
Weight (kg) |
| DTHSFF77/77-200 | 200 | 7 7/8 | 65 | 2 5/9 | 4.5 |
| DTHSFF90/90-200 | 200 | 7 7/8 | 65 | 2 5/9 | 6 |
| DTHSFF90/90-225 | 225 | 8 6/7 | 65 | 2 5/9 | 6.2 |
| DTHSFF115/115-210 | 210 | 8 1/4 | 95 | 3 3/4 | 10 |