hollow drill steel meaning in Chinese
空心钻杆钢
中空钢
中空钻探钢
Examples
- Rock drilling equipment . hollow drill steels in bar form
凿岩钎杆用中空钢 - Rock drilling equipment - hollow drill steels in bar form
凿岩钎杆用中空钢 - Hollow drill steel
凿岩用中空钢 - Hollow drill steel
凿岩用中空钢 - Hollow drill steel
中空钻探钢