In rotary drilling rig operations, rotation speed and torque settings are not fixed but must be dynamically adjusted based on geological conditions. Use high speed, low torque for soft soil; medium-low speed, medium-high torque for sandy gravel layers; and low speed, high torque for rock layers. The core principle is: Torque determines if it can drill, while rotation speed determines how fast it drills. The two must be perfectly coordinated for efficient and safe construction. Read More

In 2025, the global mobile crane market is restructuring. China, as the core engine, has a market scale of 85 billion yuan, while the global scale will exceed 22 billion US dollars, with the Asia-Pacific region growing at 6%-8%. On the demand side, the new energy sector drives a 35% growth in demand for equipment above 200 tons, and the penetration rate of new energy models exceeds 25%; the annual replacement demand is 32,000 units, and the online leasing rate will reach 60%. In competition, XCMG, Sany and Zoomlion hold a combined 68% market share, with leading enterprises strengthening advantages through green intelligence, globalization and full-life cycle services. The industry will develop towards "high-end, intelligent and green" in the future, with new energy penetration reaching 40% by 2030. To gain a foothold in the 75% concentration integration by 2030, enterprises must address raw material and R&D pressures and deepen technology and services. Read More

The rotary drilling rig, as the core equipment for foundation engineering construction, its operation quality directly affects the safety and efficiency of the project. This guide, based on the principle of "theoretical foundation building, practical operation advancement, safety throughout" Read More

The hydraulic system is the core power unit of the rotary drilling rig. The performance of the hydraulic oil directly affects the operation efficiency and service life of the equipment. Reasonable selection of the hydraulic oil model and strict adherence to the replacement process are the ke Read More

In the field of engineering and construction, truck cranes, known as the "mobile giant arms," have their technical level directly determining the efficiency of infrastructure construction and operational safety. From the imitated mechanical equipment in the early days of the People's Republic of Chi Read More