The failure analysis of hydraulic pipe rupture of a certain type of aircraft shows that the fatigue cracking of the pipe is caused by the surface damage of the pipe,which belongs to manufacturing defects.This paper studies the surface quality control of hydraulic pipes in the manufacturing process,analyzes the influencing factors of surface quality from various aspects such as raw materials,process methods,process control,inspection and acceptance,and takes corresponding preventive measures to improve the surface quality of pipes.
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