Coke oven equipment oil cylinder steel, bronze material ISO9001:2008 approved OEM ... machining Weight:50kg-200kg CompanyDalian Wills Machine Co.,LtdProduct nameCoke oven equipment oil cylinderMaterialSteel,20#,45#,Aluminium, bronzeComposeHydraulic body, Hydraulic piston ... . We will give you our best prices! Passed ISO certifcationCoke oven equipment oil cylinder