... -changing furnace(USA) and vertical aluminum melting furnace(Germany) Features: 1. Piston Material: ZLD108 ZLD103 Madle-124 2. Piston pin Material: 20Mn 20Cr ... , 4D32, 4D34, 4D40, 4D55, 4D56, 4G1, 4G6, 4G33, 4G54, 4G56, 4G63, 4G64, 4G82, 6D16, 6D20, 6D22, 6D31, 6D32, 6DS70A 5. ISUZU ...