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It is used to fix the wellhead connection casing string, seal and control the annular space between the pipes, suspend the oil pipe, control the wellhead pressure and regulate the flow of oil (gas) well, and send the oil to the wellhead’s oil pipe, and may be used to close the well if necessary, but also for acidizing fracturing, water injection, debugging and other special operations.It is composed of casing head, tubing head and oil (gas) tree.

• W . P：2000PSI ~ 20000PSI
• W . M：Oil、Gas、Mud、H2S， CO2
• W . T：-46℃ ~ 121℃ （LU level）
• M . G：AA、BB、CC、DD、EE、FF、HH
• S . L：PSL1 ~ 3G
• P . L：PR1 ~ 2