Camshaft ( The Piston Shaft ):
1)Various high-pressure pistons parts available
2) Surface roughness: Ra0.2-0.4
3) Good wear resistance
4) High anti-breaking strength
5)Tolerance: ± 0.008mm
6) Hardness: HV700 
7) Material: 20CrMo 
8) Made by CNC precision grinding machine
9) OEM & ODM
10) Packing:carton