ST52 STKM 13C S45C Hollow piston rod 

hollow rod, actually a kind of seamless tube with thick wall, is mainly used to manufacture piston rod. Hard chrome plated hollow rod is used as hollow piston rods for hydraulic cylinders. Chrome plated hollow rods are made from seamless tubes with hard chrome plating externally. We can manufacture hard chrome plated hollow rods with grades like ST52,E355,STKM 13C,AISI 1026,AISI 1045, S45C,etc.