The Hy-chrome liners are made up by two kinds of metal, outer metal and inner metal. Outer shell is made of high-quality carbon steel. Inner sleeve is mad.. [details]

Processed from high quality alloy steel, hardness can reach HRC58-62.  With a high degree of finish and machining accuracy, our piston rods are widel.. [details]

Valve body, valve seat and nut are manufactured by forging. After heat treatment, hardness of valve body and valve seat can reach HRC58-62.   Ac.. [details]