200 Ton High-Rise Lift Self - Locking Hydraulic Jack

200 Ton High-Rise Lift Self - Locking Hydraulic Jack. Self-Locking Safety: Nut self-locking mechanism ensures safe load retention even when oil pressure is removed. Overload Protection: Built-in pressure relief valve and hold-pressure device prevent overload for safe operation. Leak-Resistant Design: High-pressure hose and threaded joint connection quickly overcome oil leakage issues. Versatile Application: Suitable for underwater use and various industries including construction, mining, and shipbuilding. High-Quality Material: Constructed from alloy steel with medium pressure rating and single-acting piston structure. Certified Reliability: Products hold GS, CE, and ISO9001 certifications ensuring international quality standards. Easy Maintenance: Simple reciprocating operation helps eliminate air and maintain seal performance over time. Proven Track Record: Manufacturer with 16 years export experience and patents in heavy-duty hydraulic cylinders.