Niran Tools and Machinery supplies Tube Bending Machines with Debarring Function. Niran Tools and Machinery supplies High quality Machine Tools for Engineering Industries, Band Sawing Machines, Tube Cut off Machines, Tube Bending Machines and of course - NTM is the leader in Bi-metal Band Saw Blades. The Tube Bending Machines with Debarring Function quickly and easily Debars tubes from 6 to 42 mm 0.D. [11/2"} internally and externally. The debarers, made from a special alloy, are driven by an electro-motor and guarantee long life expectancy and debars without marks due to the fixed number of rotations of 183 rotations/min.