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Changsha Tianhe Drilling Tools and Machinery Co.,L Products
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Teamwhole - Model DHD COP SD NUMA QL - DTH Hammer Application In Pile Foundation With Model NUMAQL DHD TK SD Shank
1.Advantages of construction method Use:DTH Hammer drilling is a good way to drill through cave formation and avoid stuck problem Cave:When encountering caves,drill bit inclines to the cave.The stabilizer ensures the hole straightness Bit stuck;One reason is cave encounter,the drill bit deviates,and the entire set of drilling tools inclines in the hole.The other,is hole collapse.A large number of rock or clay catch the drill pipe,resulting in bit ...