API SPEC 7-1:2023+ERR 1:2023
Current
The latest, up-to-date edition.
Rotary Drill Stem Elements
Hardcopy , PDF
English
23-02-2023
This standard specifies the technical delivery conditions for rotary drill stem elements: upper and lower kelly valves, square and hexagonal kellys, drill stem subs, drill collars (steel and non-magnetic, round, and spiral), heavy-weight drill pipe (HWDP), drilling and coring bit connections, and stabilizers.
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