EN 10216-1 P195 SEAMLESS STEEL TUBES FOR PRESSURE PURPOSES

EN 10216-1 P195 Seamless steel tubes for pressure purposes,Non-alloy steel tubes with specified room temperature properties.EN 10216-1 P195 for two qualities TR1 and TR2 of seamless tubes.

EN 10216-1 P195 Seamless Steel Tubes for Pressure Purposes 

Standard:EN 10216-1 Seamless steel tubes for pressure purposes – Technical delivery conditions – Part 1: Non-alloy steel tubes with specified room temperature properties

EN 10216-1 Standard specifies the technical delivery conditions for two qualities TR1 and TR2 of seamless tubes of circular cross section with specified room temperature properties made of non-alloy quality steel.

EN 10216-1 P195 Seamless steel tubes for pressure purposes,Non-alloy steel tubes with specified room temperature properties.

 

EN 10216-1 P195 Seamless steel tubes for pressure purposes Quick Details
Manufacture:Seamless process
Out Dimensions: 14mm-509mm
Wall Thickness: 2mm-50mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)
Ends: Plain End, Beveled End, Treaded

 

The steel name:
(1)the capital letter P for pressure purposes;
(2)the alphanumeric TR1 for qualities without specified aluminium content, impact properties and specific inspection and testing requirements ;
(3)the alphanumeric TR2 for qualities with specified aluminium content, impact properties and specific inspection and testing requirements.

 

Tube manufacture and delivery conditions
The tubes shall be manufactured by a seamless process. The forming operations and delivery conditions are shown in Table 1.

Table 1 — Forming operations and delivery conditions

Forming operation

Quality

Delivery condition

Hot formed

TR1

As formed or normalized or normalizing-formed

  TR2

Normalized or normalizing-formed

Hot formed + cold finished TR1 and TR2

Normalized

 

Chemical composition of EN 10216-1 P235

Chemical composition (cast analysis) a in % by mass for quality TR2

Steel grade

Steel
number

C
max.

Si
max.
Mn
max.
P
max.
S
max.
Cr
max.
Mo
max
Ni
max.
Al tot
min.
Steel
name
Steel
number
0,16 0,35 1,20 0,025 0,015 0,30 0,08 0,30

0,02

P235TR2

1.0255

Cu
max

Nb
max.
Ti
max.
V
max.
Cr+Cu+Mo+Ni
max.
0,30 0,010 0,04 0,02

0,70

 

Chemical composition (cast analysis) a in % by mass for quality TR1

Steel grade

Steel
number
C
max.
Si
max.
Mn
max.
P
max.
S
max.
Cr
max.
Mo
max
Ni
max.
P235TR1 1.0254 0,16 0,35 1,20 0,025 0,020 0,30 0,08

0,30

Al tot
min.

Cu
max
Nb
max.
Ti
max.
V
max.
Cr+Cu+Mo+Ni
max.
0,30 0,010 0,04 0,02

0,70

 

Mechanical properties of EN 10216-1 P235
Mechanical properties for quality TR2

Steel grade

Tensile properties

Impact properties

Steel name

Steel
number

Upper yield strength
R eH
b min. for Wall Thickness
T mm

Tensile
Strength
R m
Elongation
A min. %
b
c

Minimum average
absorbed energy
KV 2 J
at a temperature of °C
c

T ≤ 16 16 < T ≤ 40 40 < T ≤
60
l

t

MPa *

MPa * MPa * MPa * l t 0 -10 0
P235TR2 1.0255 235 225 215 320 to 440 25 23 40 28 d

27

Note: l = longitudinal t = transverse
Mechanical properties for quality TR1

Steel grade

Tensile properties

Impact properties

Steel name

Steel
number

Upper yield strength
R eH
b min. for Wall Thickness
T mm

Tensile
Strength
R m
Elongation
A min. %
b
c
Minimum average
absorbed energy
KV 2 J
at a temperature of °C
c
T ≤ 16 16 < T ≤ 40 40 < T ≤
60
l

t

MPa *

MPa * MPa * MPa * l t 0 -10 0
P235TR1 1.0254 235 225 215 360 to 550 25 23

Note: l = longitudinal t = transverse

 

Tolerances of EN 10216-1 Seamless steel tubes on outside diameter and on wall thickness

Outside
diameter D
mm

Tolerances on D Tolerances on T for a T/D ratio
≤ 0,025 > 0,025
≤ 0,050
> 0,050
≤ 0,10

> 0,10

D ≤ 219,1

± 1% or ± 0,5 mm whichever is the greater ± 12,5 % or ± 0,4 mm
whichever is the greater
D > 219,1 ± 20 % ± 15 % ± 12,5 %

± 10 %

For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5 % of the wall thickness T

Tolerances on exact lengths 

Length L

Tolerance on exact length

L ≤ 6 000

+ 10
0
6 000 < L ≤ 12 000

+15
0

L > 12 000

+by agreement
0

Inspection
Types of inspection
non-specific or specific inspection for quality TR1;
specific inspection for quality TR2.

Testings

(1)Chemical analysis
(2)Tensile test
(3)Impact test
(4)Leak tightness test(Hydrostatic test)
(5)Electromagnetic test
(6)Dimensional inspection
(7)Visual examination
(8)Non-Destructive Testing

 

Options
1) Delivery condition normalized or normalizing-formed for TR1;
2) restriction on copper and tin contents;
3) product analysis;
4) verification of longitudinal impact testing at −10 °C for quality TR2 ;
5) selection of method for verification of leak-tightness ;
6) Non-Destructive Testing for quality TR2 ; the test method shall be specified by the purchaser;
7) special end preparation ;
8) exact lengths ;
9) test unit restriction for tubes with D ≤ 76,1 mm of quality TR2 ;
10) wall thickness measurement away from the ends;
11) additional marking;