API Coupling for Tubing and Casing PipeThe casing pipe coupling is a kind of oilfield drilling tool, which is mainly used for the connection of the oil pipe, and mainly solves the problem that the existing coupling easily generates fatigue fracture due to stress concentration. The tubing coupling structure is: the tubing end is connec ...
lvy lee - Permanent Steel Manufacturing Co.,Ltd
Posted 1 year agoPress
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