Abstract: In long-distance inspection operations of oil and gas pipelines, the severe wear of the pipeline inspection gauge (PIG) cups will cause derivation of the mandrel from the pipe axis, which is detrimental to the detection ...

Abstract: In the long-distance pigging operation of natural gas pipelines, severe wear of the sealing cups always leads to the failure and instability of the pig. Different from ordinary conditions, the wear process of the polyurethane ...