EN 10305-1 seamless unhoned tubing for hydraulic cylinder 

Unhoned tube or unhoned tubing, is a kind of steel tube with ID suitable for further honing or skiving&roller burnishing.  Unhoned steel tube is also a kind of seamless steel tube that is cold drawn or deep hole bored.  We manufacture cold drawn unhoned tubes with regular steel grade like ST52,E355, 1026,1045,STKM 13C,27SiMn,etc. 

Hollow Bar Seamless Precision Tube Mechanical Tubings Honed Tube Unhoned Tube