Featuring upper and lower double round flange mounting structure for firm fixation, the piston rod ensures balanced stress in both extension and retraction. Thickened cylinder tube provides higher load-bearing capacity. Through-type chrome-plated piston rod delivers even pushing and pulling force, equipped with high-pressure wear-resistant seals to prevent oil leakage in long-term use. Bore, stroke, pressure and flange dimensions can be customized, and OEM service is available.