Carbide drill bit YG3X (K01) Hardness ≥91.5 In the tungsten cobalt titanium alloy wear resistance is the best, but the impact toughness is poor, suitable for cast iron nonferrous metals and alloys, broken fire steel, alloy steel small section of the high-speed finishing The

Carbide drill bit YG3 (K05) Hardness ≥90.5 Wear resistance after YG3X, more sensitive to shock and vibration, suitable for cast iron Nonferrous metals and their alloys Continuous cutting of semi-fine car, fine thread and reaming The

Carbide drill bit YG6A (K10) Hardness ≥91.5 is a fine particle alloy, good wear resistance, suitable for chilled cast iron, non-ferrous metals and their alloys semi-finishing, but also for the broken steel alloy steel semi-finishing and finishing.

Carbide drill bit YG6 (K15K20) Hardness ≥ 90 Higher wear resistance, but lower than YG3, shock and vibration than YG3X as well. Suitable for semi-finishing and finishing of cast iron, non-ferrous metals and alloys, medium-cutting speeds for non-metallic materials.

Carbide drill bit YG8 (K30) Hardness ≥89.5 Use high strength, impact resistance, shock resistance than YG6 is good, but the wear resistance and allow the cutting speed is low. Suitable for cast iron, nonferrous metals and alloys, non-metallic materials, low-speed roughing.

K0 type: for inlaid in a type of carbide drill (24.26.28.30.32.34.36.38.40.42, etc.)

T3 type: for the inlaid rotary drilling rock drill bit (T308, T310, T313),

Type T1: for hardened drill bits (T105, T108, T110) for rotary drilling.