EN 10216-2 P195GH Seamless steel tubes
 
 
Standard:EN 10216-2
Seamless steel tubes for pressure purposes —Technical delivery conditions
Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties
 
 
EN 10216-2 P195GH Seamless steel tubes for pressure purposes
 
 
EN 10216-2 P195GH Seamless steel tubes Quick Details
Manufacture:Seamless process
Wall thickness(WT): 2.1mm——20 mm.
Outer diameter (OD): 21 mm——509mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
 
Additional Info
Port of Shipment: Tianjin, China
Payment Terms:T / T, LC
Delivery: 7-15 days after payment
Surface: Tubes will be varnished (Outside only) to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
 
 
The steel name of non-alloy steel grades
(1)The capital letter P for pressure purposes;
(2)The symbols GH for elevated temperature.
 
 
MANUFACTURING PROCESS
(1)Steel making process
Steels shall be fully killed.
 
(2)Tube manufacture and delivery conditions
The tubes shall be manufactured by a seamless process.
The tubes can be either hot or cold finished.
 
EN 10216-2 P195GH Seamless steel tubes shall be supplied in the relevant heat treatment conditions as specified in Table 1.
 

Steel grade		Heat treatment a	Austenizing		Tempering
Steel name	Steel number		Temperature °C	Cooling Medium	Temperature °C	Cooling medium
P195GH	1.0348	+N b	880 to 940	Air	-	-
a  +N = Normalising, +NT = Normalising + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing. b  Normalising includes Normalising Forming.

 
 
 
 
Chemical composition of EN 10216-2 P195GH
 

Steel grade

Steel number

C

Si

Mn

P max

S max

Cr

Mo

Ni

Al tot

Cu

Nb

Ti max

V

Cr+Cu +Mo+Ni

Others

195GH

1.0348

≤ 0,13

≤ 0,35

≤ 0,70

0,025

0,020

≤ 0,30

≤ 0,08

≤ 0,30

≥ 0,020 b

≤ 0,30 c

≤ 0,010 d

0,040 d

≤ 0,02 d

≤ 0,70

-

 
 
 
 
Mechanical properties of EN 10216-2 P195GH
 

Steel grade

Upper yield strength or proof strength R eH or Rp 0,2 for Wall Thickness T min.

Tensile Strength Rm

Elongation A min. % a

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

Steel name

Steel number

T ≤ 16

16 < T ≤ 40

40 < T ≤ 60

60 < T ≤ 100

l

t

l

t

MPa *

MPa *

MPa *

MPa *

MPa *

20

0

-10

20

0

P195GH

1.0348

195

-

-

-

320 to 440

27

25

-

40 c

28 d

-

27

 
Note:l = longitudinal t = transverse
 
 
 
Dimensions tolerances of EN 10216-2
 
Tolerances on outside diameter and wall thicknes
 

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 ± 0.5mm   whichever is the greater	± 12,5% or ± 0.4mm whichever is the greater
D > 219,1		± 20%	± 15%	± 12,5%	± 10% a
a 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 inside diameter and wall thickness
 

Tolerances on inside diameter			Tolerances on T for a T/d ratio
d	d min		≤ 0,03	> 0,03 ≤ 0,06	> 0,06 ≤ 0,12	> 0,12
± 1% or ± 2 mm whichever is the greater	(+ 2% ,0)or (+ 4 mm,0)	whichever is the greater	± 20%	± 15%	± 12,5%	± 10% a
a 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 outside diameter and minimum wall thickness
 

Outside diameter D mm	Tolerances on D	Tolerances on T min for a T min /D ratio
		≤ 0,02	> 0,02 ≤ 0,04	> 0,04 ≤ 0,09	> 0,09
D ≤ 219,1	± 1% or ± 0.5mm whichever is the greater	(+ 28%,0) or (+ 0.8 mm,0) whichever is the greater
D > 219,1		+ 50% 0	+ 35% 0	+ 28% 0	+ 22% a 0
a 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 inside diameter and minimum wall thickness
 

Tolerances on inside diameter		Tolerances on T min for a T min /d ratio
d	d min	≤ 0,05	> 0,05 ≤ 0,1	> 0,1
± 1% or ± 2 mm whichever is the greater	(+2%,0) or (+ 4 mm,0) whichever is the greater	+ 35% 0	+ 28% 0	+ 22% a 0
a 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
Dimension in mm
 

Length L	Tolerance on exact length
L ≤ 6000	+10 0
6000 < L ≤ 12 000	+15 0
L > 12 000	+ by agreement 0

 
 
 
Preferred dimensions
dimensions in mm
 

  
 
 
 
Table 6 (Continued)
 
dimensions in mm
 

  
 
 
 
 
 
 
 
TESTINGS
(1)Chemical analysis
(2)Tensile test(Tensile test at room temperature, Tensile test at elevated temperature)
(3)Flattening test
(4)Ring tensile test
(5)Drift expanding test
(6)Ring expanding test
(7)Impact test
(8)Leak tightness test(Hydrostatic test,  Electromagnetic test)
(9)Dimensional inspection
(10) Visual examination
(11) Non-destructive testing
 
 
MARKING
Marking to be applied
The marking shall be indelibly marked on each tube at least at one end. For tubes with outside diameter D ≤ 51 mm the marking on tubes may be replaced by the marking on a label attached to the bundle or box.
 
 
PROTECTION
The tubes will be delivered with A temporary protective coating or durable coating and/or lining
 
 
Photos of EN 10216-2 P195GH Seamless steel tubes
 
 
 
 
 
 
 
 
 
Ordering Information
 Mandatory information
a) the quantity (mass or total length or number);
b) the term "tube";
c) the dimensions ;
d) the designation of the steel grade in accordance with this Part of EN 10216 ;
e) the test category for non-alloy steel .
 
 
Options
1) Cold finishing.
2) Restriction on copper and tin content.
3) Product analysis.
4) Impact testing .
5) Longitudinal impact testing at -10° C for non-alloy steel grades.
6) Tensile testing at elevated temperature .
7) Selection of leak-tightness test method .
8) Non-Destructive Testing for test category 2 tubes for detection of transverse imperfections.
9) Non-Destructive Testing for test category 2 tubes for detection of laminar imperfections .
10) Special ends preparation.
11) Set of dimensions other than D and T.
12) Exact lengths ).
13) The type of inspection document other than the standard document.
14) Test pressure for hydrostatic leak-tightness test .
15) Wall thickness measurement away from the ends .
16) Non-Destructive Testing method.
17) Additional marking .
18) Protection .