... DIN 2093 AND din 6796 2) OEM: 30 Years Functon: Belleville spring are conically formed angular Discs, which are loaded in ... : "Shuangdi" Serial Product Cover Spring and Stamping Part,Such as Belleville Spring,Clutch Spring,Suspension Spring,Valve Spring,Compression Spring,Tension ... by computer,metallography microscopeCertificated TS16949,ISO14001,OHSAS18001 certificated by TUV Belleville Spring