Metallurgy oil cylinder Aluminium, steel, bronze material ISO9001:2008 approved OEM service, ... machining Weight:50kg-200kg CompanyDalian Wills Machine Co.,LtdProduct nameMetallurgy oil cylinderMaterialSteel,20#,45#,Aluminium, bronzeComposeHydraulic body, Hydraulic piston, Hydraulic RodHydraulic ... will give you our best prices! Passed ISO certifcation Metallurgy oil cylinder