This video introduces what's cemented carbide bush? Langsun Carbide can produce various kinds of tungsten Carbide Bushes: We use the material as below: Material Spec.: 100% virgin raw material with submicron grain and average grain size. Tolerance Controlled: strict tolerances under control according to your drawing, which can reach +/-0.01mm; Our tungsten carbide bottom sleeve has many advantages: 1). Abrasive resistant 2). Corrosion-free 3). With good compression property 4). Most wear-resistant bushings 5). High heat resistance 6). Low maintenance rate 7).The tungsten carbide has better performace like the hardness is 10 times more than gold,5 times more than tool steel, 4 times more than titanium ,and also with oil resistance, separates the harmful medium. 8).Keep shape stable and resistant with temperatures over 1000 °C or below 500 °C, With long service life, the = maximum height can reach 270mm. 9).High precision,whose tolerance can be +/-0.002mm. 10).HIP processed,we have the HIP according to your unique requests.