... dust pollution 3)cutting all kinds of pipe CNC Metal circular saw machine1 Air operated,the hydrauic pressure has the automatic feed ... the corresponding cutting compound to be possible to lengthen the saw blade life and the section quality.4 Burr free,no dusty ... level3.04KWφThe saw blade is suitable the size250,275,300250,275,300,315300,315,350350,400,455 Hydraulic automatic Metal circular saw machine