Appoved by: Sepp Wolfsgruber / Patricia Pla 20/06/2017 QUALITIES FOR CENTRIGUGAL ROLLS Code Hardness Applications Colours K00 480-530 HB 48-52 HRC 500-554 HV standard for flour and feeds mills none K01 420-470 HB 44-47 HRC 436-490 HV smooth frosted by fused alumina for flour milling K02 380-430 HB 40-44 HRC 393-447 HV smooth frosted by fused alumina for flour milling K04 540-580 HB 52-55 HRC 565-608 HV flacking rolls for edible oil seeds-high performance improvement, chocolate K12 550-600 HB 53-56 HRC 576-630 HV cracking rolls for flour milling, edible oil processing, feeds and cofee- high performance improvement. K28 520-590 HB 51-55-HRC 544-619 HV beer-coffee-salt K36 510-550 HB 50-53 HRC 533-576 HV cracking rolls for flour milling, edible oil processing, feeds and cofee K58 470-520 HB 47-51 HRC 490-544 HV feeds NBR 380-450 HB 40-46 HRC 393-468 HV oil seeds