PDC-Polycrystalline Diamond Compact 1. Excellent Wear Resistance 2. High Impact Resistance 3. Good Thermal Stability Diamond Hammer Bit Inserts/PDC botton insert-SDB Series Diamond Hammer Bit Inserts is sintered under the condition of high temperature and high pressure. It is made of Polycrystalline Diamond layer and hard alloy, which helps to link the impact resistance and wear resistance of the ...