... MaterialC45,40Cr,20CrMnTi,42CrMo,stainless steel ..... as per your requestprocessForging or castingHeat treatmentHigh frequency quenching, teeth hardeningSurface treatmentBlacking as per customer ... 's requirementstandardGB1244-85,DIN8187,8188;ISO/R606Model numberStandard or nonstandard (single duplex and triple)05B,06B,08A,08B,10A ...