XIAYI company mainly produce different kinds of shock absorber pistons, dimentions 

from 20MM～50MM,can be used in motorcycle or car’s shock absorbers. Based on 

powder metallurgy material, banded filled PTFE material outside, has the advantage 

of low friction and good wear resistance.

Dimension: D45XD8X12.5

Multiple-twin oil holes design,no scratch & crack on banded surfaceNet weight is 

30.36g

Density:powder metallurgy parts no less than 6.8g/cm3, filled PTFE material is 

2.05-2.17g/cm3

Hardness: powder metallurgy parts is 65HRB,filled PTFE material is 60HRB

Steam treatment:2H high temp steam holding time

Thickness of Fe3O4:0.004-0.005mm

Die tooling design and making in house