- In round and hexagonal design.
- With hollowed centers.
- Excellent machining properties.
- Good weld-ability.
- Reliable performance.
- Professionally crafted with over fifty years of experience in manufacturing special steel & rock drilling tools.
- Export raw material to overseas market.
- Materials include Sanbar20 / Sanbar23 / Sanbar64 / 45# / 55SiMnMo / 42CrMo4 and so on.