▎ 摘　　要

NOVELTY - This utility model relates to pipe fitting equipment technology field, especially a pneumatic cylinder of a low noise precision seamless tube, comprising a seamless steel tube body outer surface layer of the seamless steel pipe main body is provided with a shell; the two ends of the shell is provided with a sealing cover, the sealing cover surface is provided with a blocking shell and the seamless steel pipe main body is filled with graphite powder. The utility model claims a low-noise pneumatic cylinder seamless precision tube, outside the seamless steel pipe main body is sleeved with a shell, then one end of the shell and a seamless steel pipe main body is welded and fixed by the sealing cover, filling graphite powder in the gap between the shell and the seamless steel pipe main body of the other end of the gap, the other end is sealed and closed to form noise seamless pipe filled with the sealing cover after noise in the seamless pipe at the normal working process, which is generated by absorbing the silencing of the graphene, which effectively reduces the diffusion of noise, ensures the normal working environment, reduces the harm to the staff.