Inner blowout preventer
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The internal blowout preventer is a large pressure drop check valve, the valve conical plug, reduce the cutting effect of mud on the valve seat, to ensure the correct closing state.
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Fax: +86-546-7278383
Email: sales@sdsunrisepetro.com
Address: No. 355, South 1st Road, Dongying City, Shandong Province, China
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