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   The steel name of non-alloy steel grades (1)The capital letter P for pressure purposes; (2)The symbols GH for elevated temperature.   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
195GH	1.0348	≤ 0,13	≤ 0,35	≤ 0,70	0,025	0,020	≤ 0,30	≤ 0,08	≤ 0,30

Al tot	Cu	Nb	Timax	V	Cr+Cu+Mo+Ni	Others
≥ 0,020	≤ 0,30 c	≤ 0,010	0,040	≤ 0,02	≤ 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
Steel name	Steel number	T ≤ 16	16 < T ≤ 40	40 < T ≤ 60	60 < T ≤ 100
		MPa *	MPa *	MPa *	MPa *	MPa *
P195GH	1.0348	195	–	–	–	320 to 440

Note:l = longitudinal t = transverse   Dimensions tolerances of EN 10216-2 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%
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%
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% 0
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% 0
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

  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