According to customs data, China’s construction machinery industry maintained steady growth in international trade during the first quarter of 2026, driven primarily by strong export performance. In March 2026, total import and export trade value reached USD 5.584 billion, representing a year-on-year increase of 8.08%. Imports: USD 204 million, down 20% year-on-year Exports: USD 5.38 billion, up 9.54% year-on-year   Strong Export Growth in Q1 2026 For the first quarter of 2026, total trade volume reached USD 16.657 billion, marking a significant 22.7% year-on-year increase. Total imports: USD 591 million, down 9.62% Total exports: USD 16.066 billion, up 24.3% The data highlights a continued trend of export-driven growth, reflecting strong global demand and the increasing competitiveness of China’s construction machinery sector in international markets.   Export Value in RMB Terms Based on export value calculated in RMB: March exports: RMB 37.36 billion, up 6.29% year-on-year Q1 cumulative exports: RMB 112.437 billion, up 21.3% Overall, the industry continues to demonstrate resilience and expansion in overseas markets, supported by stable demand and ongoing globalization strategies.  

Rotary drilling rigs are essential equipment in infrastructure construction. During spring and autumn, fluctuating temperatures and increased dust exposure can accelerate wear and reduce equipment efficiency. Proper maintenance is critical to ensuring stable operation and extending service life. This guide highlights key maintenance practices for the engine, fuel system, transmission, travel mechanisms, and working components—helping your equipment perform reliably in challenging seasonal conditions.     1. Engine & Fuel System (Power Core) The engine is the heart of the machine, while the fuel system ensures consistent power delivery. Seasonal adjustments and cleanliness are essential to avoid power loss and overheating. Tips: Engine Oil & Filters:Use 15W-40 oil in spring, and adjust to 10W-30 or 15W-40 in autumn depending on ambient temperature. Replace engine oil and fuel filters regularly.Check oil level and condition—replace immediately if contamination, emulsification, or unusual odor is detected. Air Intake & Fuel System:Clean or replace air filters more frequently due to dust and sand.Drain water and impurities from the fuel tank. Inspect fuel lines and connections to prevent leaks and contamination.     2. Transmission & Travel System These systems function as the “limbs” of the equipment, requiring proper lubrication, tightening, and inspection to ensure smooth movement and efficient power transmission. Tips: Rotary Drive Gearbox & Reducer:Replace gear oil after the first 500 hours, then every 2,000 hours or annually (whichever comes first).Maintain oil level at half of the inspection window and check for leaks.Inspect gears, bearings, and shafts; clean and lubricate guide rails to prevent jamming. Travel & Slewing Mechanism:Adjust track tension properly. Inspect track shoes and rollers for smooth operation.Replace lubrication oil in travel and slewing reducers.Check for leaks, abnormal noise, and ensure brake pressure remains within 3–5 MPa for reliable operation.     3. Working Components Working components are directly exposed to harsh construction conditions and are subject to impact and wear. Regular inspection, cleaning, lubrication, and replacement are essential. Tips: Kelly Bar & Drilling Tools:Inspect threads, keyways, and welds for cracks, deformation, or excessive wear.Clean thoroughly and apply grease to prevent corrosion.Replace worn or damaged teeth and tighten all loose components. Winch Wire Rope:Regularly inspect main and auxiliary winch ropes. Replace immediately if excessive wear, broken wires, or corrosion is detected.Ensure proper rope arrangement on the drum and secure pressing devices.Lubricate regularly and check brake pads and clutch plates to ensure responsive braking.