Calibre 22 24 And 26 Galvanizado Steel Electric Type KR18 SSR Roofing Roll Forming Machine With 457mm Cover Width 1. Technical Parameter Number Items UnitType RF-ST 1 Steel Thickness mm 0.4-0.8mm Galvanizado, Zinalum 2 Forming Speed m/min 8-12 3 Roller stands stations 8 stations 4 Roller Material mm 45# steel, coated with chrome 5 Shaft material and diameter mm Ф70mm, 45# steel, fire treated 6 Main Power KW 7.5 7 Power Supply 220V, 60HZ,3 phases 8 Tolerance mm 1.5 9 Material