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Drilling BOP Double Ram BOP 7 1/16"-5000psi with API Standard
Structural Features
1.Such major pressure bearing components as the body and the bonnet
are cast formed with alloy steels of high strength and high
malleability and properly heat treated. And the water pressure test
for strength is performed for each preventer according to the API
Spec 16A standards before ex factory.
2. At the bottom of the chamber of the body and the ram there are
high brace rods and a desilting slope tilting towards the well
bore. So the sands and silts can be removed automatically when the
ram is opened and closed. This can reduce the kinetic frictional
resistance of the ram and is also helpful to the well pressure
assisted sealing of the ram. The internal surface of the ram
chamber is smooth and easy to clean.
3. A kind of floating ram sealing is adopted to reduce the
resistance in opening or closing the ram, minimize the wearing of
the rubber elements and lengthen the service life of the ram. It
also prevents the body and ram from rusting together and thus is
easy to dismount.