

In Oman, a Middle Eastern country, the booming mining and infrastructure construction put forward stringent requirements for efficient and reliable drilling equipment. Faced with the prevalent hard limestone formations locally, a local mining contractor needed a solution to improve the efficiency of blast hole operations. Eventually, a YG420 Down The Hole Drill Rig from China was successfully put into use at its mine and won recognition with outstanding performance.【WhatsApp/WeChat/Phone】+86 13837122632
YG DTH Boring Machine Parameters
| Model | YG412 | YG420 |
| Drilling diameter(mm) | 50~203 | 50~150 |
| Rock hardness | f=6~20 | f=6~20 |
| Drilling depth (m) | 30 | 40 |
| Walking speed(km/h) | 2.5 | 2.5 |
| Gradeability | 30° | 30° |
| Power type | Diesel | Diesel |
| Fuel tank volume(L) | 85 | 85 |
| Hydraulic oil tank volume(L) | 188 | 188 |
| Weight(Kg) | 6300 | 6300 |
| Dimension(mm) | 6600*2110*2500 | 6600*2110*2500 |
Customer’s Requirements
Conquer extremely hard rock formations:
The working face is located in high-hardness limestone formations, posing a severe challenge to the rock-breaking capacity of equipment. The customer needed a drilling rig that could significantly improve the hard rock drilling speed and effectively reduce the abnormal wear of drilling tools.
Adapt to harsh environmental climate:
The high temperature and sandy weather in Oman’s summer put forward high requirements for the reliability of the equipment’s engine cooling system, hydraulic system sealing and air filtration system.
Control comprehensive operating costs:
While pursuing efficiency, the customer paid close attention to the economy of long-term operation, including sensitivity to equipment fuel consumption and the hope to reduce downtime caused by faults, thus lowering the total cost of ownership.
Ensure production continuity and reliability:
The mine production rhythm is tight, and the customer needed the equipment to have high reliability and easy maintenance characteristics to ensure the continuous operation of key processes.

Why Choose YG Down The Hole Drill Rig?
- Strong power matching hard rock working conditions: The 200kg high-torque impactor provides much higher single impact work than ordinary models, ensuring a considerable drilling speed even in hard rocks with an f value of up to 20.
- Excellent fuel economy: The equipment is standard equipped with an intelligent fuel monitoring system, which can save about 15% of fuel. For mines operating continuously for a long time, this means a significant reduction in long-term operating costs and optimizes the overall cost of owning the DTH drilling machine price.
- Reliability built for harsh environments: The whole machine adopts a reinforced design, and the heat dissipation system is optimized to cope with the high temperature and sandy weather in Oman’s summer, ensuring the attendance rate and stability of the equipment.
Practical Application of DTH Boring Machine
After arriving at the Oman mine, this YG420 DTH boring machine was quickly put into blast hole drilling work, and its stable and high-performance performance was impressive:
- Achieved stable and efficient drilling in hard rock formations, with a significant increase in the average daily drilling footage.
- The compact body design (only 2.1 meters wide) enables flexible movement and quick transfer on the mine platform.
- The low failure rate and convenient maintenance design reduce unplanned downtime.

Customer Feedback on DTH Drilling Equipment
The project person in charge said: “This YG420 DTH drilling equipment is not only powerful, but more importantly, it is very durable and fuel-efficient. After considering the equipment performance and usage cost, we think its return on investment is excellent.”
Other Uses of the DTH Boring Machine
In addition to mining, the YG420 dth boring machine can also be widely used in Oman’s hydropower project foundation drilling, railway construction earthwork engineering, building materials quarry blast hole drilling and other scenarios, and can also be adapted to underwater drilling and blasting reef engineering. It is a multi-purpose dth drilling equipment.
Contact Us
If you have a demand for drilling equipment for engineering construction, whether it is a mine, hydropower or infrastructure project, you can contact us. We can customize solutions related to dth boring machine according to the construction standards and project requirements of different countries, and provide one-stop services from equipment selection, price accounting to export certification, installation and after-sales service, allowing cost-effective drilling equipment to boost global engineering construction.【WhatsApp/WeChat/Phone】+86 13837122632



