Casing head

Casing head and casing spool use standard design , the kava style may be suitable for a variety of specifications and mandrel ty 1.Casing head and casing spool use standard design , the kava style may be suitable for a variety of specifications and mandrel type casing hanger .2. The bottom of the design of a variety of secondary seal structure to choose from, depending on the structure site installation line injection or injection reached the sealing effect .

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