... professional on die casting, both die casting moulds and die casting parts. The details for water pump for air conditioner ,shown as below: ItemDescriptionDie castingpartsModelHX10028Molding ... ,etc.Heat treatmentHardened,NitridingHardnessHRC50~55Mould featureAdvanced design, Novel structure, High precision, Quality materials, Long lifetime, Short delivery timeEquipmentCNC precision mould engraving ...