High Quality Machining Piston for Hydraulic Industry Ningbo Saivs Machinery Co., Ltd. Base Info Model NO.:80*80*120Tolerance:+,- 0.01mmPost -Process:Heat TreatmentTechnology:Full CNC MachiningExport Market:GlobaleTrademark:SVSOrigin:Ningbo, China Description Pre:OEM Full Machining Piston for Construction Machine Next:Custom Investment Casting with Machining