... .material:65Mn 2.HRC:38-45 3.diameter:254-810mm 4.thickness:3-12mm Our company is a professional manufacturer of ... of DiscDia.Concavity ThicknessMMINCHMMMM255101233051219333013253355143834101538~50343017573,44601838~603,448019573,45102044~633,4,553521633,4,55602260~854,5,65852375~904,5.66102475~954,5 ...