The new concentric clamping machines Protem BMFM 76 and Protem BMFM 219 are designed to perform weld preparations on tubes up to 8 inches (219 mm).
The benefit of these machines is the possibility to machine several tube diameters without changing the clamping system.
20 mm (0.79") ID114.3 mm (4.50") OD
25.4 mm (1.00") ID219.1 mm (8.63") OD