Annular BOP

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Annular BOP can be divided into cone BOP  and ball BOP, which can effectively seal the annular space of drilling tool and wellbore, realize forced tripping operation, and prevent overflow or blowout.

Standard:API 16A and NACE MR-0175.

③DN:7-1/16"~30" 

④PN:500psi~ 10000psi