DESCRIZIONE:
SEAMLESS HOT ROLLED STEEL TUBES, INSIDE BORED AND HONED, FOR HYDRAULIC CYLINDER BODIES.


STEEL GRADES:

E 355 + AR (STANDARD)
E 355 + N (UPON REQUEST)

MECHANICAL PROPERTIES:

  E 355 + AR E 355 + N
TENSILE STRENGTH Rm N/mm² min. 510 510
YELD STRENGTH Rp 0,2 N/mm² min.  350  350
ELONGATION A5d % min.  20  20
IMPACT KCV (-20° C.) Joules min. --- 35


CHEMICAL ANALYSIS:

C % MN % SI % S % P %
0,20 max. 1,10 - 1,40 0,35 max. 0,035 max 0,035 max


TOLERANCES:

ACCORDING TO UNI EN ISO 10297-1
ON OUTER DIAMETER: +/- 1 %
ON WALLTHICKNESS: +/- 12,5 %
STRAIGHTNESS: 1/1000 if further straightened.
INSIDE STRAIGHTNESS: 0,2/1000 UPON REQUEST
ON THE HONED BORE: ISO H8 - H11
(the relationship between inner diameter and wallthickness see Tech Area)
ROUGHNESS OF THE HONED SURFACE:
Ra MAX 0,3 MY (UNI ISO 468/91)
RANDOM LENGHTS: from 2 to 10 m.

CERTIFICATION and MARKING:

EN 10204:2004/3.1 and its heat number on the tubes.

PACKING:

ANTIRUST OIL  PROTECTION (see Tech Area), BOTH ENDS CLOSED BY PLASTIC CAPS, BUNDLED BY STEEL STRIPS.

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