China API 6A Wellhead Casing Head - China
API 6A. Origin. China. HS Code. 843143. Product Description. The casing head is a kind of part of connecting casings and wellheads. It is used as supporting the weight of technical casing and oil string casing, sealing the annular space between the casings, It provides a transition joint for the tubing head, Christmas tree and other wellheads ...
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