... ,JIS,BS satandard H8~H9 honed tube for hydraulic cylinder1 OD32-500mm W.T.3.5-80mm2 ... /m4 Inside Roughness:0.4~0.8umsteel pipes for hydraulic useMaterial: C20, CK45, etc. also ST52 if ... enough time. our products are widely used in hydraulic industry and is very popular both home and ... Power, Coal, Machinery, Low and high-pressure boiler, hydraulic prop and so on.InvitationWelcome to Our two factories. ...