EN 10216-2, DIN 17175

EN 10216-2, DIN 17175 Pipes for pressure purposes with specified elevated temperature properties. Boiler tubes

Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other. The pipes are manufactured from carbon and low-alloy steel grades which are resistant to loads under high pressure and temperatures. They are used for the construction of power engineering appliances such as: boilers, heating coils, stoves, heaters, heat exchangers.

The pipes are manufactured with the diameters between 21,3 – 660 mm and with the wall thickness of up to 100 mm in the case of hot rolling, and with the diameters between 10,2 – 108 and with the wall thickness of up to 12,5 mm in the case of cold drawing.

The pipes are manufactured with TC1 tests (I requirement level) and TC2 (III requirement level) according to PN-EN10216-2.

EN10216-2
Steel grades used Details: Table 1
Dimensions and tolerances Details: Table 2
Pipe lengths Pipes with precise lengths are manufactured with the following tolerance values:

  • for pipes 0- 6m -0/+10%
  • for pipes 6-12m -0/+15%
  • for pipes longer than 12m -0/to be negotiated
Tightness Pipes should be subject to water testing (7Mpa) or electromagnetic testing.
Straightness < 0,0015 of pipe length (below 3mm per every meter of pipe length)
Tests Details: Table 3
Table 1
Mechanical properties
Pipe types Steel grades Mechanical properties during tensile testing in room temperature Resilience
Boiler
P195GH,
P235GG
P265GH
16Mo3
14MoV6-3
13CrMo4-5
10CrMo9-10
Wg PN-EN 10216-2
Upper yield limit or yield strength Re or R0,2 for wall thickness of t min Tensile strength Rm Elongation A min% Minimum energy average absorbed KVJ at the temperature of 0°C
T<\=16 16<T<\=40 40<t<\=60 60<T<\=60 I T
MPa MPa MPa MPa MPa I t 20 0 -10 20 0
P195GH 195 320- 440 27 25 40 28 27
P235GH 235 225 215 360- 500 25 23 40 28 27
P265GH 265 255 245 410- 570 23 21 40 28 27
16Mo3 280 270 260 450- 600 22 20 40 27
14MoV6-3 320 320 310 460- 610 20 18 40 27
13CrMo4-5 290 290 280 440- 590 22 20 40 27
10CrMo9-10 280 280 270 480- 630 22 20 40 27

 

Steel grades CHEMICAL COMPOSITION (LADLE ANALYSIS)
C% max Si% max Mn% max P% max S% max Cr% max Mo% max Ni% max Al.cał% min Cu% max Nb% max Ti% max V% max Cr+ Cu+ Mo+ Ni% MAX
P195GH 0,13 0,35 0,70 0,025 0,020 0,30 0,08 0,30 >\= 0,020 0,30 0,010 0,040 0,02 0,70
P235GH 0,16 0,35 1,20 0,025 0,020 0,30 0,08 0,30 >\= 0,020 0,30 0,010 0,040 0,02 0,70
P265GH 0,20 0,40 1,40 0,025 0,020 0,30 0,08 0,30 >\= 0,020 0,30 0,010 0,040 0,02 0,70
16Mo3 0,12- 0,20 0,35 0,40- 0,70 0,025 0,020 0,30 0,25- 0,35 0,30 >\= 0,020 0,30
14MoV6-3 0,10- 0,15 0,15- 0,35 0,40- 0,70 0,025 0,020 0,30- 0,60 0,50- 0,70 0,30 >\= 0,020 0,30 0,22-0,28
13CrMo4-5 0,15 0,50- 1,00 0,30- 0,60 0,025 0,020 1,00- 1,50 0,45- 0,65 0,30 >\= 0,020 0,30
10CrMo9-10 0,10- 0,17 0,35 0,40- 0,70 0,025 0,020 0,70- 1,15 0,40- 0,60 0,30 >\= 0,020 0,30
Table 2
Outside diameter and wall thickness tolerances
Outside diameter D mm Permissible deviations of outside diameter D Permissible deviations of wall thickness t depending on the T/D ratio
<\=0,025 >0,025
<\=0,050
>0,050
<\=0,10
>0,10
D<\=219,1 +\- 1% or =\- 0,5mm depending on which is greater +\- 12,5% or 0,4 mm depending on which is greater
D>219,1 =\- 20% =\- 15% =\- 12,5% =\- 10%
For the outside diameter of D>\=355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted
Inside diameter and wall thickness tolerances
Permissible deviations of inside diameter Permissible T deviations depending on the T/d ratio
d dmin <\-0,03 >0,03
<\=0,06
>0,06
<\=0,12
>0,12
+\- 1% or +\- 2mm depending on which is greater +2% +4mm
depending on which is greater
+\-20% +\-15% +\-12,5% +\-10%
For the outside diameter of D>\=355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted

Table 3

EN 10216-2:2002

Inspection and test type Test frequency Test category
Mandatory tests Ladle analysis One per ladle 1 2
Tensile testing in room temperature One per every test pipe X X
Flattening test for D<600mm and the ratio of D<\=0,15 but T<\=40mm or ring testing for D>150mm and T <\=40mm X X
Rolling test on a mandrel bar for D<\=150mm and T<\=10mm or ring testing for D<\=114,3mm and T <\=12,5mm X X
Resilience testing at the temperature of 20 ºC X X
Tightness testing Every pipe X X
Dimensional testing X X
Visual inspection X X
NDT in order to identify longitudinal discontinuity Every pipe X X
Material identification for alloy steel X X
Optional tests Final product analysis One per ladle X X
Tensile testing at elevated temperature One per ladle and for the same thermal processing conditions X X
Resilience testing One per every test pipe X X
Resilience testing in the machine direction at the temperature of -10ºC for non-alloy steel grades X X
Wall thickness measurement at a distance from pipe ends X X
NDT in order to identify transverse discontinuity Every pipe X X
NDT in order to identify delamination X X