114mm DTH Drill Pipe

Through precision quenching and tempering heat treatment, the pipe's mechanical properties are refined to withstand extreme pressure, violent vibration, and cyclic impact loads during high-intensity ultra-deep drilling.
Even in ultra-hard rock, severely fractured strata, or highly abrasive geological environments, it sustains stable operational performance and an extended service lifespan, making it a reliable choice for large-scale heavy-duty projects.

• High-Strength Alloy Construction: Forged from premium 42CrMo alloy steel via high-temperature precision forging, which enhances material density and eliminates internal defects. Post heat treatment, it achieves tensile strength ≥1100MPa, yield strength ≥950MPa, and hardness HRC34-38, delivering superior structural strength, toughness, and impact resistance to tackle ultra-deep heavy-duty drilling challenges.
• Precision-Engineered Wear-Resistant Threads: Adopts CNC ultra-precision machining to ensure thread dimensional accuracy, paired with carburizing and nitriding surface treatment (hardness up to HRC66-71) for enhanced wear and corrosion resistance. The ergonomically optimized thread profile ensures tight engagement, preventing slippage and fluid leakage while guaranteeing reliable energy transmission under super-high torque conditions.
• Reinforced Thick-Wall Design: Features a 16-18mm thick wall structure that significantly boosts rigidity and pressure-bearing capacity, effectively resisting deformation under ultra-high torque during deep drilling. After sandblasting to remove surface impurities, an anti-corrosion coating is applied to shield against groundwater, drilling mud, and corrosive media, extending service life in complex ultra-deep formations.
• Universal Compatibility: Complies with international drilling industry standards, achieving perfect compatibility with mainstream 114mm DTH hammers, drill bits, and adapters. Its excellent interchangeability allows for rapid component replacement, minimizing project downtime and enhancing overall construction efficiency.
• Efficient Power Transmission: Integrated forging and precision machining processes ensure uniform mechanical properties across the pipe body, reducing energy loss during high-speed drilling operations and improving ultra-deep drilling efficiency while lowering energy consumption.

• Mining & Quarrying: Specialized in drilling 120-140mm diameter blast holes for extra-large open-pit mines and quarries, excelling in extra-hard rock formations to support large-scale ore extraction and efficient rock fragmentation with its deep drilling capabilities.
• Water & Geothermal Drilling: Ideal for constructing 300-500m ultra-deep water wells to meet irrigation, urban, and industrial water supply needs, as well as geothermal development projects, capable of penetrating thick aquifers and ultra-hard rock formations to ensure effective resource exploitation.
• Construction Engineering: Applied in foundation drilling, anchoring, and slope reinforcement for large-span bridges, super high-rise buildings, and high-speed railway hubs, delivering stable boreholes in deep hard rock and fragmented formations to guarantee structural stability and safety.
• Geological Exploration: Utilized for ultra-deep core sampling and stratum detection in large-scale geological surveys, preserving sample integrity to provide accurate data support for geological analysis and mineral resource evaluation.

• Prolonged Service Life: Offers a 35-45% longer service life compared to ordinary drill pipes, reducing replacement frequency and operation and maintenance costs, thereby lowering the overall investment in large-scale projects.
• Superior Drilling Efficiency: Optimized structural design ensures stable energy transmission and low drilling resistance, maintaining high drilling speed and hole straightness even in harsh strata, effectively shortening the construction cycle for heavy-duty projects.
• Exceptional Environmental Adaptability: The combination of a thick wall, anti-corrosion coating, and reinforced threads enables it to adapt to ultra-hard, fragmented, and corrosive geological conditions, ensuring consistent performance in complex drilling scenarios.
• Simplified Maintenance: Standardized structural design and excellent interchangeability facilitate quick assembly and disassembly; daily maintenance only requires basic cleaning, reducing labor intensity and maintenance time for on-site teams.
• Reliable Quality Assurance: Undergoes stringent factory inspections, including material composition testing, mechanical property verification, and non-destructive testing (NDT), supplemented by comprehensive after-sales support to ensure smooth project progression.

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