DTR Profiling and underc u t t i n g ( f or h i gh pre c i si on ) RE CW 7˚ INSL Ref. h P Steel   M Stainless  K Cast iron    N Non-ferrous S Superalloys  : First choice : Second choice H Hard materials Coated Cermet External AH7025 Seat NS9530 Designation GH130 CW±0.02 RE INSL h AH725 T9225 size Internal DTR300-150 3 3 1.5      20 5 DTR400-200 4 4 2      20 5 DTR478-239 5 4.78 2.39      25 5.5 Face DTR500-250 5 5 2.5      25 5.5 DTR600-300 6 6 3     25 5.5 : Line up Parting DTR Profiling and underc u t t i n g RE CW 7˚ INSL Ref. h P Steel    M Stainless   K Cast iron     N Non-ferrous  S Superalloys    : First choice : Second choice H Hard materials Coated Cermet Uncoated Seat AH7025 AH8005 NS9530 Designation GH130 CW±0.05 RE INSL h AH725 AH905 KS05F T9225 size DTR3-150 3 3 1.5         20 5 DTR4-200 4 4 2         20 5 DTR5-250 5 5 2.5         25 5.5 DTR6-300 6 6 3       25 5.5 䖃 : Line up Reference pages: Toolholders → 6-12 - 6-16, Standard cutting conditions → 6-26 6-24