Honed Tubes

Honed tube for hydraulic cylinders are obtained from high quality cold drawn tubes, available in a wide dimensional range, ranging from 40 mm ID to 250 mm ID

International Standards

EN 10305-1: E355

Werkstoff Nr. : 1.0580

DIN 2391: St52-3

STAS: OL52-3

AFNOR: E36-4

BS : 4360-50D

UNI EN 10025: Fe510

JIS : SM490A

GOST 19281-89 :17G1S

AISI / SAE / ASTM: 1024

Quality specifications

Steel grade :E355 (EN 10305-1) / St52-3 (DIN 2391)

Heat treatment : +SR (EN 10305-1) / BK+S (DIN 2391)

Diameter range (metric) : from OD 40 x ID 30 mm to OD 300 x ID 250 mm(bigger dimensions: upon request)

Diameter range (imperial) : from OD 2″ x ID 1½” to OD 8″ x ID 7″(bigger dimensions: upon request)

Tolerance : ISO H8 (EN ISO 286-2)

Standard length : 6000 – 8000 mm for ID 70 mm7000 – 9000 mm for ID >75 mm(upon request: special lengths)

Surface finish (ID) : Ra ≤ 0.20 µm – skived and roller burnished tubeRa ≤ 0.40 µm – honed tube

Straightness : max. 1 mm : 1000 mm

Total deviation- tubes with length 6 m: max. 3.5 mm : length

– tubes with length > 6 m: for each metre over 6 m

the tolerance must be increased by 0.5 mm

Eccentricity : ≤ 10% according to the standard EN 10305-1

Roundness : within the limits of the ID tolerances