A thick, heavy steel component of a conventional ramblowoutpreventer.
常规闸板式防喷器的一个厚且重的部件。
2
During the process of using the RamBlowoutPreventer, the sealing effect is the key.
闸板防喷器在使用过程中,密封效果是关键。
3
Variable bore ram-type blowoutpreventer, as an improved blowout preventer, is capable of sealing around drill pipes with a range of sizes and has advantages such as low cost and convenience.