1Semi-automatic Pipe Cutting Machine. 2Pneumatic Control Circular Sawing Machines. 3Productive with High Flexible & Accuracy CNC Metal circular saw machine1 Air operated,the ... life and the section quality.4 Burr free,no dusty. Technical parameter TypeYJ-275YJ-315YJ-350YJ-455Aluminum Cutting Machine The saw cuts ... ,300,315300,315,350350,400,455 Pneumatic Automatic Circular Cold Sawing Machine