Generally speaking, friction saw machine uses plain carbon steel saw blade. Its cutting form is grinding under high temperature. But the pipe orifice is really hot, deformation happens a lot. Moreover, saw blade rotates fast with higher danger and noise. 

114 friction saw machine

Flying cold saw machine using high speed alloy steel blade, the heat produced from blade cutting will be passed to blade debris, and cutting parts and saw blade will keep cold. The rotation speed is lower than hot flying saw. Pipe orifice has no deformation or burr, no need of using end-facing machine. Flying cold saw machine is able to save workload, time and labor force, without spark, low noise, high safety, high production efficiency and high quality.

76 flying cold saw machine