Cemented carbide bushing in the improvement of oil production, in order to ensure the use of oil, people gradually to the development of deep wells, high angle wells, but the difficulty of oil extraction is gradually increasing, so the oil extraction parts require good wear resistance, corrosion resistance or impact resistance.

 Cemented-carbide bushing is used as  wear-resisting product in petroleum machinery for oil well development ,  has high strength, good wear resistance and high hardness. It is widely used in today's market and meets the unique needs of special fields.