E355 seamless honed steel tube for hydraulic cylinder 

Honed tube, also named honed tubing, is a kind of steel tube with smooth bore can used for construction of hydraulic cylinder barrel. So, honed steel tube is also named as hydraulic cylinder tube.  Seamless Honed tube is made from cold drawn seamless tube or hot rolled seamless tube that is deep hole bored, and can be classified as carbon steel honed tube and alloy steel honed tube. 

Hollow Bar Seamless Precision Tube Mechanical Tubings Honed Tube Unhoned Tube