1.Axle beam material:20Mn2
2.Brake drum:QT450
3.Hub:HT250
4.BRAKE CHAMBER:Q235
5.AXLE HEAD:20MN2
6.SELF-LOCKING NUT:40Cr
7.SELF-LOCKING BOLT:35m10x15
8.WASHER:35CrMn
9.AXLE BOLT:35CrMn
10.BEARING LAN
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