1Semi-automatic Pipe Cutting Machine. 2Pneumatic Control Circular Sawing Machines ... Air operated,the hydrauic pressure has the automatic feed,the chucking automatic installment,the movement is steady,the operation ... 2 The tangent,the bevelling,the angle is freely precise.3 Has the circulating cooling system,selects the ... ,300,315300,315,350350,400,455 Pneumatic Automatic Circular Cold Sawing Machine