Crawler cranes link KH180
1) Material:ofMnB35or40Mn2
2)heat treatment process:
Quenched:30-36HRC+treadIFquenching:48-54HRC
3)Processing: Millingside-drillscrewholes-redsquare- roughboring-heat treatment- Shot-testing-fineboring,endedmouthandchamfering
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