2018 HDD (Tricone bit VS Water Hammer), Naju
HDD Test (Tricone bit + Mud motor VS Water Hammer + Mud motor)
나주에서 트리콘비트와 워터해머를 이용한 시추 테스트
Видео 2018 HDD (Tricone bit VS Water Hammer), Naju канала Hanjin D&B TV - 한진디엔비 TV
나주에서 트리콘비트와 워터해머를 이용한 시추 테스트
Видео 2018 HDD (Tricone bit VS Water Hammer), Naju канала Hanjin D&B TV - 한진디엔비 TV
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2 сентября 2019 г. 5:10:22
00:02:24
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