No. I
Thickness - 80/ 60 / 40 MM
Grade - M 20 / 35
No. II
Thickness - 80/ 60 MM
No.III
Thickness - 60 MM
Grade - M 20
No.IV
Thickness - 80/ 100 MM
Grade - M 20 / 35 / 40
No.V
Grade - M 25 / 35 / 50
