Grade 10.9 /12.9 /14.99 high strength alloy steel fasteners are made of chrome-manganese or chrome-molybdenum alloy steel, and the hardness is generally between 42-52HRc. Because the electroplating (s...

In the parts processing industry, the most taboo problem is the deformation of parts, once it appears, the consequences will be unimaginable, affecting the economic benefits of enterprises, and causin...