Ready to Honed Tube

 

Grade:ST 52
Size range:
Inside diameter from 40 to 250mm
Max length 14m.

Straightness: 0.5 /1000
Tolerance INT: ISO H9
Tubes are provided according to the norm EN10305-1, DIN 2391

Type:cold drawing
ST 52 CHEMICAL COMPOSITION (%)

Si
(Max)
Mn
(Max)
C
(Max)
P
(Max)
S
(Max)
0.55 1.6 0.22 0.025 0.025


MECHANICAL PROPERTIES

Tensile strength
Min
Yield Point
Min
Elongation
% Min
580 N/mm² 420 N/mm² 10

EXCENTRICITY

Outer Diameter Excentricity
125 mm 5%
> 125 mm 7%

measured according to the formula:
E = (max Wt – min Wt)/( max Wt + min Wt) x 100 %

BORE OVALITY
The bore ovality is comprised in the 50 % of the inside diameter tolerances.

Marking: JW, ID, OD
Length: unfixed length or fixed length
Package: banding with steel strips, braiding parcel at outside
Conservation: Anti rust oiled coating on the inside and outside of the surface, plastic caps at both ends.
Impact test: -20℃, 27 J (only for special requirement)