... Stainless steel Process:Silica sol casting Certification:ISO9001-2008 97/23EC Yueqing lianggong Machinery FactoryCasting ProcessPrecision casting,Investment casting,Sand casting,Silica sol castingCasting MaterialStainless ... ,Pump cover,Guide vane,Valve boby,ProcessingHeat treament,Polishing,Sand blasting,Painting, Electrolysis InspectionEquipments Spectrum analysis instrument,Metallurgical analysis ...