BEND TESTERS A coated sheet metal is bend over a defined radius allows an indication of the elongation and adhesion of a paint film due to bending stress. LAB-FINE Instruments is manufacturing following bend testers 1) Bend test unit This is a single mandrel bend tester having one mandrel per unit. Mandrel diameter is from 2,3,4,5,6,8,10,12,16,20,25 and 32. Recommended panel size is 50 mm width and .3 mm thick. 2) Conical mandrel Determines extensibility of coated metallic sheet, which are clamped in position and formed round the conical mandrel by rotating of the roller frame. 200 mm mandrel tapered from 3mm to 37 mm diameter. 3) Cylindrical mandrel bent tester This bend tester is having one frame and cylindrical mandrels are inserted. The mandrels are provided with diameters from 2,3,4,5,6,8,10,12,16,20,25, and 32 mm. Recommended panel size is 50 mm width and 1 mm thick