свободный раздел

The material is 40Mn2 or 4Mn. the inner is treated with heat treatment As for the 40Mn2,the surface hardening is HRC28-34 after heat treatment and tempering ,and 40MnB is HRC 32-38.the surface is adopt heat treatment and quenchhardening, the hardening depth is6-16mm, after tempering and quenchhardening,the hardening is HRC50-54Detailed Product Description Compatible mode: 1) Komatsu: PC60-5-6-7, PC100, PC120, PC200-5, PC220-5, PC300-5, D31, D50, D80 (D85), D155 2) Hitachi: EX60, EX100, EX120, EX200-1-2-3, EX300-1, 3) Caterpillar: E200B (E320), E240 (MS180), D5D, D6D, 4) Kobelco: SK200, 5) Sumitomo: SH120, SH200, SH280, SH300, SH400 6) Mitsubishi: MS110, MS120, MS180 the product can be customized loose section