... thickness. Annually output is 200,000 pcs. The products exported to UK, USA, France, Australia and South Africa, etc. more ... and district. We also can supply all various discs according to customers’ drawings and samples. Common Specifications of DiscDia.Concavity ... 1305,6,7,876030120~1356,7,8,10,1281032120~1408,10,1291036120-2008,10,1296038120-2008,10,12 chemical composition of our 65Mn ...