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2015年11月29日星期日

Unimate customized drilling interlocking kelly bars and kelly bar accessories for all rotary drilling rigs

Unimate customized drilling interlocking kelly bars and kelly bar accessories for all rotary drilling rigs

Kelly bar
Type: 1,Interlocking Kelly Bar 2,Friction Kelly Bar
Diameter: 377-508mm
Sections: 3,4,5,6
Application: used with piling rigs for drilling in dense sand and gravel and weak to strong rock

kelly bar accessories
kelly bar spring,kelly head etc.





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