- interlocking kelly bar-for soilmec R416
- 2016-11-03 02:40
- Lock drilling machine, three key type and six key typetwo kinds, steel material adopt high quality alloy steel seamlesss
- interlocking kelly bar matched Bauer drilling rig
- 2016-11-02 00:22
- Locking drilling bar, three key type and six key type two kinds, steel material adopt high quality alloy steel seamless