WHAT IS "MIN HDNS AT 12 DP ..RKWC"

[Guest]

"MIN HDNS AT 12 DP ON SECT A-A SHALL BE 7 UNITS RKWC LESS THAN RKWC HDNS IMMEDIATELY UNDER SURF.DECARB"

WHAT DOES IT MEAN? \HELP!!!

 

[wsylvester]

heat treatment requirements..rather hardness..

 

[Guest]

THANK YOU ! WSYLVESTER,YOU HELPED ME .THANKS!