Why do the water wel drilling bits have different colors

What is the difference between different colors of drill bits?
The color of a drill bit does not directly represent its quality or performance, it is more a reflection of the material of the drill bit, the surface treatment process and the manufacturer's brand identity.

The color of a drill bit is mainly influenced by the following factors

Material:
High-speed steel drill bits: usually silver-white or gray, with high hardness and wear resistance.
Cobalt alloy drill bits: more complex colors, may appear gold, silver or black, etc., with higher heat resistance and toughness.
Carbide alloy drill bits: Various colors, commonly black, gray, gold, etc., with extremely high hardness and good wear resistance.

Surface treatment:
Titanium plating: The surface of titanium plated drills is gold or rainbow color, with good wear resistance, corrosion resistance and thermal conductivity.
Nitriding treatment: Nitriding treated drills have black or gray surface, with high hardness and wear resistance.

Brand Marking:

Different manufacturers may use different colors to identify their products.

Why is color not the only criterion for judging the quality of a drill bit?

Color can be camouflaged: Some poor quality drills imitate the color of high quality drills through surface treatment to mislead consumers.
There is no direct correlation between color and performance: the performance of a drill bit depends mainly on the material, geometry, heat treatment process and other factors, not on the color.

If you need to buy water well drill bits, click the link below to contact our professional team.

Contact us