- EN 10305-1

 - EN 10305-4

 Used for

- Manufacturing of Piston rods for hydraulic cylinders.

- The tubes are suitabe for chroming.

Note: The tubes are cold drawn having OD machined by center-less grinding to final piston rod size plus an agreed small over metal suitable for last grinding operation before chroming.


  Sizes - table

Steel grades and dimension range for grinding
Grade OD WT Length
ART H355 25 - 140 mm 3 - 20 mm 6 - 12 m
ART H460 25 - 140 mm 3 - 20 mm 6 - 12 m
OD +/-0.05 mm for OD < 100 mm and +/-0.10 mm for OD >= 100 mm  



 Final surface finish, Ra:

 0.40 µm or better.


 max 0.35 mm/1000mm.

 Chemical composition (%) 
 Mechanical properties
 Impact test 
 Non-destructive testing 
 Tube ends preparation

 Protected with plastic caps.

 Surface protection Unprotected for last grinding operation before chroming.


 Marking Continuous marking along the length of the tube with following information: manufacturer’s logo, dimension (OD x ID), steel grade, heat number and the number of standard or other data as per the customers’ request.
 Packaging  Packed in bundles with circular or hexagonal cross-section, bundle weight of maximum 2000 kilograms.
The bundles are tied with protected metallic straps to provide protection against mechanical damage and corrosion during storage and in transit.
 Mill test report  Mill test reports are issued to customer requirements. Usually it comply with EN 10204 – 3.1