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DOWNHOLE TOOLS
New Check Valve
Release time:2017/6/23 16:31:46 Read:634

   The new check valve is designed with the spring protection element and high abradability sealing surface. It can effectively
prevent blowout inside the drill string while encountering downhole complexities of HTHP, high H2S and high impurity
content. Downhole service time of which ranks top in China. One patent has been obtained.

Patent: ZL 200920079054.6

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