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Application:Be used with piling rigs for drilling in dense sand and gravel and weak to strong rock.
Kelly sections: Kelly bar 2-5 sections.
Type: Interlocking/friction/combined kelly bar.
Size:Diameter range from 355mm-630mm.
Warranty:One year .
This is UNIDRILL 630-5*26 interlocking kelly bar, 5 sections, the max drilling depth is 120m, will be used for hard rock foundation construction.