油管头;
Taper type hanger and straight type hanger are available for tubing head.
油管挂的密封形式有非金属密封(图一)金属密封(图二)种形式.
It is composed of casing flange, casing cross joint, wellhead valves, tubing hanger, tubing head cross joint and accessories.
这种井口装置由套管法兰、套管大四通、井口阀、油管挂、油管挂体及相关附件组成。
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