Home > Term: kelly bar
kelly bar
A hollow bar attached to the top of the drill column in rotary drilling; also called grief joint; kelly joint; kelly stem.
- Jenis Kata: noun
- Industri / Domain: Pertambangan
- Kategori: Peratmbangan secara umum; Mineral mining
- Government Agency: USBM
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- ed.young
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(V.I.P) 21084 poin - 100% positive feedback
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