 | API 7-1
City: | Alvin, Texas, United States |
Category: | Services (Automotive) |
Date: | 1/6/2022 11:22:55 AM (175 days ago) |
Description: | API 7-1 SPEC specifies requirements for the drill stem elements like upper and lower kelly valves, square and hexagonal Kellys, drill stem subs, standard steel and non-magnetic drill collars, drill... |
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