1. BPW axle type : 12T,14T,16T,18T,20T
2. Axle tube is 20Mn2 seamless pipe ,through one-pipe press forging and heat-treatment ,has strong carring capacity and high strength .
3. Spondle material is 20Mn2 over all forging and heat-spondle treatment, has high strength .
4. Spindle and tube through high strength submerged axc welding ,safe ...
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