1.Disc spring materials----carbon steel, stainless steel, alloyed steel, 60si2mna, 50crva, sus301, sus304, sus316, 17-7ph, 30w4cr2v, inconel -750, inconel-718, Cusn 8, cube 2, nimonic 90 2.Surface treatments----zinc plating, nickel plating, chrome plating, phosphating, etc. 3.Size----outside diameter 6-600mm, between it, can meet all your requirements. 4.Delivery time----sample order 5-7 days, big odrder 20 days. 5.Standard----din2093 Size----outside diameter 6-600mm Standard----din2093
