Type of flute | A | C | BC | BC2 | B | D | DE | E | F |
Shape of roller | UV | UV | UV | UV | UV | UV | UV | UV | UV |
(300mm) Flute no. of roller | 34±2 | 38±2 40±2 | 44±2 | 48±2 | 50±2 | 66±2 | 75±2 | 96±2 | 124±2 |
(mm) Hight of flute | 4.6~4.9 | 3.6~3.9 | 3.0~3.4 | 2.8~3.2 | 2.6~2.9 | 1.9~2.1 | 1.5~1.9 | 1.1~1.8 | 0.7~0.8 |
Rate of contracting | 1.51~ 1.59 | 1.44~ 1.51 | 1.42~ 1.49 | 1.40~ 1.45 | 1.36~ 1.42 | 1.40~ 1.41 | 1.35~ 1.4 | 1.29~ 1.39 | 1.22~ 1.26 |