... DIN ,EN, ASTM, BS,JCSI.3. Piece numbers: small, medium and large series.4. Process: cast, machining, turning, milling, drilling, ... thread cutting.5. Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating, grinding, polishing6. Analysis ... control: According to ISO 9001 2001 SS316 Eccentric Latch,latch for doors