筒形可调节流阀主要用于节流压井管汇，控制井内流体套压用。
Tube of shape Can transfer throttle chief be used for Choke and Kill Maniflod , Control oil gas wellhead In fluid pressure use.
筒形可调节流阀主要用于节流压井管汇，控制井内流体套压用。
Tube of shape Can transfer throttle chief be used for Choke and Kill Maniflod , Control oil gas wellhead In fluid pressure use.
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