89mm DTH Drill Pipe

Through rigorous quenching and tempering heat treatment, the pipe's mechanical properties are optimized to withstand extreme pressure, intense vibration, and repeated impact loads during high-intensity drilling.

With excellent adaptability to hard rock, fractured strata, and high-abrasion geological conditions, it maintains stable performance and an extended service lifespan, making it ideal for medium-scale mining and construction projects.

• High-Strength Material: Made of 42CrMo alloy steel, processed through high-temperature forging to enhance material density and eliminate internal defects. After heat treatment, it achieves tensile strength ≥1000MPa, yield strength ≥850MPa, and hardness HRC30-34, providing excellent robustness, toughness, and impact resistance for heavy-duty medium-scale drilling.
• Wear-Resistant Threads: Adopting CNC precision machining to ensure thread accuracy, combined with carburizing and nitriding treatment (HRC62-67) to significantly improve wear and corrosion resistance. The optimized thread profile enhances engagement tightness, preventing slippage and leakage, and ensuring reliable energy transmission under high torque conditions.
• Reinforced Thick-Wall Structure: 12-14mm thick wall design enhances rigidity and pressure-bearing capacity, effectively avoiding deformation under high torque. Sandblasting treatment followed by anti-corrosion coating protects the pipe from groundwater, drilling mud, and corrosive media, extending its service life in harsh formations.
• Broad Compatibility: Compliant with international standards, it perfectly matches mainstream 89mm DTH hammers, bits, and adapters. The excellent interchangeability allows for quick replacement of components, reducing project downtime and improving construction efficiency.
• Stable Energy Transfer: Integrated forging and precision machining ensure uniform mechanical properties of the pipe, minimizing energy loss during high-speed drilling, thus improving drilling efficiency and reducing energy consumption for medium-scale projects.

• Mining & Quarrying: Specialized in drilling 90-110mm blast holes for large open-pit mines and quarries, adapting to hard rock strata and supporting efficient ore extraction and rock fragmentation in large-scale medium-intensity projects.
• Water & Geothermal Drilling: Used for constructing 100-300m medium-deep water wells for agricultural irrigation, residential, and industrial water supply, as well as geothermal projects, capable of penetrating thick aquifers and hard rock to ensure effective resource exploitation.
• Construction Engineering: Applied in foundation drilling, anchoring, and slope reinforcement for highways, bridges, and high-rise buildings, capable of drilling stable boreholes in hard rock and fractured formations to ensure construction safety.
• Geological Exploration: Conducts deep core sampling and stratum detection in medium-scale geological surveys, ensuring sample integrity and providing accurate data for geological analysis and mineral evaluation.

• Longer Service Life: 25-35% longer than ordinary drill pipes, reducing replacement frequency and operation/maintenance costs, thereby cutting the overall investment in medium-scale construction projects.
• High Drilling Efficiency: Optimized structure and precision machining ensure stable energy transmission and low drilling resistance, maintaining high drilling speed and hole straightness in harsh strata, effectively shortening the construction cycle.
• Strong Environmental Adaptability: Thick wall, anti-corrosion coating, and reinforced threads enable the pipe to adapt to high-hardness, fractured, and corrosive formations, ensuring stable operation in complex medium-scale drilling scenarios.
• Easy Maintenance: Standardized design and excellent interchangeability facilitate quick assembly and disassembly of components; daily maintenance only requires simple cleaning, reducing labor intensity and maintenance costs.
• Reliable Quality: Undergoes strict factory inspections, including material testing, mechanical property testing, and NDT, with comprehensive after-sales support (technical guidance and spare parts supply) to ensure smooth project progress.

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