drill collar

drill collar from StableMax Drilling Tools

By: StableMax Drilling Tools  25/09/2009
Keywords: drill pipe, drill collars, spiral drill collar

 

Spiral drill collars are used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. are manufactured strictly according to API Spec.7 and Standard SY5144,
 
Order instruction,please specify:
OD
Bore
Length of
Connection Type

Keywords: drill collars, drill pipe, spiral drill collar

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