Hydraulic trailer landing leg is an automated heavy-duty support component developed for large semi-trailers, widely applied to container trailers, low-bed transport vehicles and chemical tank trailers used in long-distance freight and port operation scenarios. Unlike manually cranked support legs, this hydraulic trailer outrigger leg relies on hydraulic power to complete lifting and lowering work automatically, eliminating repeated manual shaking and greatly cutting labor intensity for operators. Each paired hydraulic leg supports a rated lifting weight of 30 tons with a maximum static load of 90 tons, and its 480mm standard telescopic stroke fits rugged ground and various tractor specifications, effectively preventing vehicle tilt and unstable standing during cargo loading and unloading. The built-in integrated hydraulic cylinder adopts thick alloy steel pipe and high-pressure oil seal, which can resist oil leakage under long-term heavy load; the independent hydraulic control valve allows single-side or double-side synchronous lifting, and the pressure protection device avoids overload damage to the leg body. All metal surfaces undergo sandblasting and anti-corrosion paint treatment, with internal multi-layer sealing structures blocking rain, dust and road salt erosion, adapting to coastal, snowy and muddy harsh working environments. The reserved universal mounting holes match most trailer frames without secondary cutting or welding, shortening assembly time by over 30%. Many fleet owners choose hydraulic trailer support legs for frequent loading and unloading tasks, as the hydraulic system only needs simple regular oil replacement for maintenance, and damaged valves and cylinders can be replaced separately instead of the whole leg assembly. We accept customized hydraulic stroke, galvanized surface treatment and brand logo printing, with a customized minimum order quantity of 50 sets. Every hydraulic trailer outrigger leg is wrapped with waterproof film and fixed on wooden pallets before shipment to prevent collision deformation in transit, and complete test reports will be delivered together with goods within 7 to 15 days after deposit payment. Compared with low-cost manual legs prone to wear and high labor consumption, our hydraulic landing leg features reinforced anti-torsion structure and stable hydraulic output, maintaining consistent working performance after tens of thousands of lifting cycles, making it an ideal automated supporting accessory for high-frequency logistics fleets.