What materials used in drill bits and drill rods?

Prodrill steel materials used in manufacturing drill bits and drill rods

1. Drill bits

1) Threaded drill bits: 42CrMo, 45CrNiMo1V

2) Tapered drill bits: 42CrMo, 45CrNiMo1V

3) Reaming bits

R32-76mm, 12 buttons: 45CrNiMo1V

R32-76mm, 15 buttons: 45CrNiMo1V

R32-102mm, 15 buttons: 43CrMo

2. Drill rods

1) Tapered drill rods (7 degree, 12 degree)

80Cr, 95CrMo, 55SiMnMo, 40SiMnCrNiMo

2) Integral drill steel

95CrMo, 55SiMnMo, 40SiMnCrNiMo

3) Drifter rods / drifting drill steel (with Male-Male thread or Male-Female thread, R32, T38)

23CrNi3Mo, 22SiMnCrNiMo

4) Extension drill rods / round drill steels (with Male-Male, Male-Female thread, T51, GT60)

23CrNi3Mo, 22SiMnCrNiMo

5) Hollow drill steel / Hot rolled Hexagonal drill rod ( with shank B22*108)

80Cr, 95CrMo, 55SiMnMo

6) Coupling Sleeve (Semi-bridge, full bridge)

40Cr, 23CrNi3Mo