In the case of being equipped with hydraulic control system,the annular BOP is capable to pack off the annular spaces with the different sizes if there's drilling tool in the well,and it is capable to fully pack off the wellhead if there's no drilling tool in the well.AS blowout happens in the course of coring or well-test operation,It is capable to pack off the annular space between well barrel and kelly,cable and steel wire. In the case of being equipped with pressure-relieving/adjustable valve and accumulator,it is capable to perform running/retrieving bit with force by the use of 18 degree butt-weld drilling rod without fine thread.
RAM BOP
Thore are two kinds of BOPS,drilling BOP and operation BOP in our company.
1 The types of BOP include conventional ram BOP,manual single ram cable BOP,manual blind-shear single-ram BOP and manual multi-function single-ram BOP(Compieted with full-seal head,half-seal head,and self-seal head)etc.
2 Driving mode:Manual & hydraulic
3 End connection:flanged and studded
4 Nominal pressure:2000PSI,3000PSI,5000PSI.
5 Nominal bore:90mm,120mm,179mm,
6 Production bases:API 16A and related standard
Audited Supplier 
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