The in-pipe micro robot is an important research direction in the field of micro-robot. The efficiency and accuracy of pipe inspection may be increased dramatically by using in-pipe micro robots.

Actual work situation and oil sample inspection proofed that the oil contamination of hydraulic system is effectively controlled and the work reliability and life of the bench are further increased.

Such system improves to some extent the quality of newly-increased loans and has incomparable advantage over individual inspection system in the past.