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The float valve sub is a special tool for prevention from well blowout in the progress of drill. It is available with plate type float valve sub and arrow-type float valve sub.
The float valve sub is a special tool for prevention from well blowout in the progress of drill. It is available with plate type float valve sub and arrow-type float valve sub.
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No. 235, Weigao Garden, Torch High tech Industrial Development Zone, Weihai City, Shandong Province, China 
