D.B.Engineering Pvt Ltd manufactures Mill and Calendar Knives. D.B.Engineering Pvt Ltd is an ISO 9001:2000 awarded company. D.B.Engineering Pvt Ltd offers various types of industrial knives and blades. Mill and Calendar Knives are made to remove strips of rubber or plastic from mills or Calendars. Mill and Calendar Knives are made of chromium tool steel that has exceptional edge properties at 50 rock well c hardness. Mill and Calendar Knives are not intended to rotate during operation, as this would tend to score the rolls.