Views: 0 Author: Site Editor Publish Time: 2026-02-11 Origin: Site
When selecting rotary drilling rigs, the selection of domestic and imported models revolves around three dimensions: performance adaptation, budget control, and after-sales convenience. There is no need to blindly believe in imports or ignore the shortcomings of domestic models. Rational selection based on engineering scenarios is the optimal solution.
In terms of performance, each has its own focus and the gap is gradually narrowing. The core advantage of imported rotary drilling rigs (such as Germany's Bao'e and Italy's Tuli) is their adaptability and stability to hard rock. With mature hydraulic technology and precision manufacturing, the power head torque is more sufficient. When constructing in ultra hard rock formations above 100MPa, the drilling speed is faster, the equipment loss is lower, and the failure rate of long-term high-intensity operations is extremely low. Its intelligent control system is more mature, with built-in automatic verticality calibration, precise hole depth control, and intelligent fault diagnosis functions, which can minimize manual errors and adapt to high-end precision engineering such as ultra deep piles and super large bridges.
Domestic rotary drilling rigs (such as XCMG, Sany, and Shanhe Intelligent) focus on high cost-effectiveness and scene adaptability. The performance of medium and large models (torque 200-400kN · m) can meet the needs of mainstream pile foundation projects such as housing construction, bridges, and high-speed railways. Core components such as power heads and chassis are mostly imported (such as Cummins engines and Rexroth main pumps), and the construction efficiency is not much different from that of imported models. At the same time, domestic models are more suitable for domestic construction scenarios, and can flexibly choose supporting pipe drives, machine lock rods, centralized lubrication and other functions. For loose sand layers, flow plastic sludge and other easily collapsed hole formations, the construction configuration can be quickly adjusted, and the adaptability is more flexible. In addition, the cost of upgrading the intelligent control system of domestic models is lower, with an additional 100000 to 300000 yuan to equip core functions such as automatic verticality adjustment and fault warning, without having to bear the high-end configuration premium of imported models.
In terms of price, the significant difference between the two is the core consideration factor for selection. The prices of imported rotary drilling rigs are generally high, with medium-sized models (torque 200-300kN · m) priced at about 7-12 million yuan, and large and ultra large models priced at over 12-20 million yuan. Upgrading core configurations requires additional high premiums. Domestic models have outstanding cost-effectiveness, with medium-sized models priced at only 1.8-4.5 million yuan and large models priced at 4.5-70 million yuan. Even if core functions such as imported main pumps, machine lock rods, and casing drives are selected, the total investment is far lower than that of imported models of the same level. Among them, upgrading the casing drive and leg oil cylinder requires 150000 to 400000 yuan, and upgrading the centralized lubrication system only requires tens of thousands of yuan. The cost-effectiveness advantage is obvious. In the second-hand market, the residual value of domestic models is more in line with domestic demand. Models that are 3-5 years old are priced at about 40% -70% of new models, while imported models have large fluctuations in second-hand residual value and high repair and accessory costs, resulting in higher holding costs in the future.
In terms of after-sales support, the advantages of domestic models far exceed those of imported models. Domestic drilling rig brands have established a comprehensive after-sales network in China, with sufficient spare parts reserves. When equipment malfunctions, maintenance personnel can quickly come to the site to handle them, parts are replaced in a timely manner, downtime losses are small, and maintenance costs are relatively low. The later maintenance costs are more controllable. There are few after-sales outlets for imported models, and the core components rely on imports. The delivery cycle is long (usually 1-4 weeks), and once a malfunction occurs, the downtime is long, and the maintenance labor and accessory costs are high, resulting in high long-term maintenance costs. This is especially suitable for high-end projects with professional maintenance teams and low requirements for construction continuity.
In summary, the core selection depends on the requirements: if we focus on mainstream pile foundation engineering, pursue high cost-effectiveness, and pay attention to after-sales convenience, domestic rotary drilling rigs are fully sufficient. By selecting core functions according to needs, we can achieve a balance between efficiency and cost; If it involves high-end precision engineering such as ultra hard rock and ultra deep piles, and the budget is sufficient, imported models can be chosen. There is no need to blindly pursue imported brands, nor to ignore the adaptability of core configurations. Adapting to engineering scenarios and controlling investment costs are the most practical choices.
