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How DTH Drill Bit Suppliers Apply to High-Hardness Rock in the Middle East in 2026

In recent years, infrastructure construction, mining, and geological exploration activities have kept growing in the Middle East (Saudi Arabia, the UAE, Oman, Qatar, etc.), and How DTH Drill Bit Suppliers Apply to High-Hardness Rock in the Middle East in 2026 drilling operations often run into high-hardness, highly abrasive rock formations. In 2026, DTH (down-the-hole hammer) drill bit suppliers' application strategies in this region need to revolve around rock formation matching, materials and processes, operating parameters, and full life-cycle cost. This article sorts out the key application points from a supplier's perspective and summarizes the key technical parameters and selection recommendations in table form.

Geological Characteristics of High-Hardness Rocks in the Middle East

1. Limestone (dense limestone): widely distributed, medium-to-high hardness, medium abrasiveness;
2. Dolomite: relatively high hardness, with locally high silica content;
3. Basalt: high hardness and strong abrasiveness, commonly found in Oman and western Saudi Arabia;
4. Granite: high hardness and strong abrasiveness, mostly seen in geological exploration and mining;
5. Quartz sandstone/siliceous rock: extremely strong abrasiveness, causing significant wear on drill bits.

Key Points of DTH Drill Bit Suppliers' Application Strategies

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1. Drill Bit Selection and Rock Formation Matching

Suppliers should recommend different tooth types and head structures based on rock hardness and abrasiveness: for high-hardness, low-abrasiveness formations, spherical teeth (ball teeth) are preferred to maintain impact crushing efficiency; for highly abrasive formations, conical teeth/ballistic teeth are preferred, along with higher-grade carbide and brazing strength. The head face design (flat face, concave face, convex face) needs to match the hole diameter and air pressure.

2. Materials and Manufacturing Processes

In 2026, suppliers generally use high-cobalt fine-grain carbide teeth to improve wear resistance and impact toughness, and the steel body uses high-strength alloy steel with optimized heat treatment processes; some suppliers have introduced interference-fit tooth holes + vacuum brazing to reduce tooth loss in high-hardness rock operations.

3. Operating Parameter Optimization

In high-hardness rock, suppliers need to work with customers to optimize air pressure, air volume, impact frequency, and feed force: increase air pressure (e.g., 1.7–2.5 MPa) to enhance cuttings removal and impact energy transfer; control feed force to avoid excessive drill bit wear; use foam/atomized dust suppression to improve cuttings removal.

4. Full Life-Cycle Cost Management

Suppliers should provide drill bit wear monitoring, refurbishment, and remanufacturing services, extending service life through tooth replacement and steel body repair to reduce cost per meter drilled; at the same time, establish local spare parts inventories and technical support teams to shorten downtime.

Summary Table of Key Technical Parameters and DTH Drill Bit Selection Recommendations

Rock Type	Uniaxial Compressive Strength (MPa)	Abrasiveness	Recommended Tooth Type	Carbide Recommendation	Recommended Air Pressure (MPa)	Drill Bit Face Design	Application Notes
Dense limestone	120–200	Medium	Spherical teeth	Fine-grain high-cobalt alloy	1.7–2.2	Flat face/concave face	Control feed force to prevent uneven wear
Dolomite	150–250	Medium-high	Spherical + conical teeth	High wear-resistant grade	1.8–2.4	Concave face	Watch for wear from siliceous interbeds
Basalt	200–350	Strong	Conical teeth/ballistic teeth	High-cobalt fine-grain alloy	2.0–2.5	Convex face/flat face	Strengthen brazing to prevent tooth loss
Granite	200–300	Strong	Conical teeth	High impact-resistant alloy	2.0–2.5	Convex face	Control impact frequency to prevent tooth cracking
Quartz sandstone/siliceous rock	180–300	Extremely strong	Conical teeth + wear-resistant hardfacing	Ultra-fine-grain high-cobalt alloy	2.2–2.5	Flat face	Shorten inspection intervals and refurbish in time

Summary
In 2026, DTH drill bit suppliers in high-hardness rock applications in the Middle East are shifting from single-product supply to comprehensive solutions of "material + structure + service." Facing highly abrasive formations such as granite, basalt, and quartzite, suppliers need to focus on carbide tooth upgrades, tooth layout optimization, and digital monitoring, combined with localized supply and parameter matching strategies, to improve drilling efficiency and drill bit life. When selecting, users should comprehensively consider rock conditions, operation scale, and full life-cycle cost to achieve stable and efficient drilling in high-hardness rock.

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