... , double trunnion, double earring (eye end)Plunger20#, 45# steel with high frequency quenchingCertificationISO9001-2008 and TS16949Packageshrink film, pallet, plywood case and cartonHydraulic cylinder ... hydraulic cylinder is used in lager-tonnage sinciput hydraulic system. Together with hydraulic pump, change valve, and limit valve, it can realize the function of lifting ...