440c material 9Cr18 stainless steel has the highest hardness and rust resistance.
High hardness; HRC58/60 degrees, with the compression and wear resistance of bearing steel balls and does not rust
High precision; concentricity tolerance ±0.08μm/German G5 level
Environmental protection and stainless steel; high adaptability to precision and anti-corrosion performance, bearing motor valve petroleum sealing high-precision instrument...
Refuse to cut corners, choose real materials, and strive for perfection in every part