Application: Diaphragm for semiconductor equipment
Material:SS  316L  Var
Surface treatment : Electropolished inner surface
Critical  dimension : concentricity 0.05, burrs free,Ra0.2 on         inner surface, Threads meet ASME B1.1
Machining  Equipment:  High  precision  turning  machine.  4          axis CNC. EP line for semiconductor industrial.
Inspection  equipment:  Thread  gauge,  roughness  tester,         Profilometer,CMM, microscope