Xia Yi company was found in 2006, after several years effort of Xia Yi people, we have achieved 

great success in the enterprise.We increased our workshop this year and developed several new 

automatic machines which highly improve our work efficiency.    

We have a technic team to develop automatic machine and we improve our pressing machine and other 

machines to lower the cost and improve  efficiency.     

D27 PISTON:

RAW MATERIAL OF SINTER PARTS:IRON BASED,IRON & COPPER BASED,COPPER BASED,STAINLESS STEEL BASED     

RAW MATERIAL OF PTFE DISC:     

PTFE+BRONZE     

PTFE+CARBON     

PTFE+GLASS FIBER     

PTFE+OTHER COMPONENT     

The detail information of the pistons:  

1.Used in front shock absorbers   

2.When temperature reach 100℃,expansion ratio ≤+/-1%

3.Using the testing ring,with the shock absorber oil,max frictional force is 15N

4.Piston can get through freely of the certain size of cylinder with 2N force   

5.PTFE tensile strength ≥18MPa,elongation @ break ≥200%  

6.Tight integration between piston and PTFE disc.PTFE won't fall off when working in the cylinder.