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By certification 
U-JOINT FOR RUSSIAN CAR LADA,NIVA,MOSKVICH,VOLGA,KAMAZ, ETC. 2101-2202025 2105-2202025 2121-2202025 21211-2202025 412-2201025 3102-2201026 53A-2201025 130-2201025 131-2205025-03 5320-2201025-02 53205-2201025 53205-2205025
1)The material for U-joint cross is 20Cr or 20CrMnTi alloy steel(hardness after heat treatment is HRC 58 -63 degree)
2)Thematerial for bearing caps is 20Cr or 20CrMnTi alloy steel(hardness after heat treatment is HRC 58 -63 degree);
3)Thematerial for needle roller is GCr15(hardness after heat treatment is HRC 59 -63 degree);
4)The material for circlip is 65Mn;
5)Cementite deepness:0. 8-1.3mm
1)The material for U-joint cross is 20Cr or 20CrMnTi alloy steel(hardness after heat treatment is HRC 58 -63 degree)
2)Thematerial for bearing caps is 20Cr or 20CrMnTi alloy steel(hardness after heat treatment is HRC 58 -63 degree);
3)Thematerial for needle roller is GCr15(hardness after heat treatment is HRC 59 -63 degree);
4)The material for circlip is 65Mn;
5)Cementite deepness:0. 8-1.3mm
