Piston rods tubes

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PISTON RODS TUBES
Brochure

Standards

- 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.

Steel grades and dimension range for grinding
Grade	OD	WT	Length
ART H355	20 - 140 mm	3 - 20 mm	6 - 12 m
ART H460	20 - 140 mm	3 - 20 mm	6 - 12 m
Tolerance
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.

Straightness

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