Honed tube (Cold
drawn seamless steel
tube in honed conditions)
Specification:
BS EN 10305 part
1:2002 E355+SR (DIN2391
ST52+BKS)
Technical
Details
Steel grade:
E355 chemical composition
%(max) mechanical
properties(min)
(ST52) C Si Mn P
S Yield Tensile
Elongation
0.22 0.55 1.60 0.04
0.04 520N/mm2 580N/mm2
14%
Delivery Conditions:
BK+S (stress relieved)
For sizes over 230mm
OD with wall thicknesses
greater than 16mm,the
yield will be 490N/mm2
Min.
Tolerances
Outside Diameter
: EN10305-1/DIN2391
Inside Diameter
: Generally H8 with
surface finish max
0.4 microns Ra
Inside straightness:1mm/1000mm
or better
Eccentricity : OD<=110mm,
max 5% of average
wall
OD>110mm,max
7.5% of average
wall
OD>230mm,max10%
of average wall
Size range:Metric:
ID 30---700mm.
