EN10216-2 Non-alloy and steel tubes

-2 is a European standard suitable for seamless steel tubes for pressure purposes. Technical delivery conditions-Part 2: Non-alloy and steel tubes with specified elevated temperature properties.(include amendment A1:2004).
Seamless steel tubes for pressure purposes.

This part of EN1026 specifies the technical delivery conditions in two test categories for seamless tubes for circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.

Application:
For producing storage tanks of heat-resistant steels used in boiler-making, tool-making;
For constructing pressure reservoirs and high pressure are simultaneously used to have summarized load and special conditions.

The main steel grade:
P195GH, P235GH, P265GH, 13CrMo4-5,
Other grades of steel pipe can be provided based on negotiations.

View the data of the steel grade as below:

Chemical Compositions(%) of
Grade C Si Mn P S Cr Mo Cu Ni
(max) (max) (max) (max) (max) (max) (max) (max) (max)
P195GH 0.13 0.35 0.7 0.025 0.02 0.03 0.08 0.3 0.3
P235GH 0.16 0.35 1.2 0.025 0.02 0.03 0.08 0.3 0.3
P265GH 0.2 0.4 1.4 0.025 0.02 0.03 0.08 0.3 0.3
13CrMo4-5 0.10-0.17 0.35 0.40-0.70 0.025 0.02 0.70-1.15 0.4-0.6 0.3 0.3
10CrMo9-10 0.08-0.14 0.5 0.30-0.70 0.025 0.02 2.00-2.50 0.9-1.1 0.3 0.3
Mechanical Properties of EN10216-2:
Grade Yield Strength (Mpa) Tensile Strength (Mpa) Elongation
L(%)
Elongation
T (%)
P195GH ≥195 320-440 27 25
P235GH ≥235 360-500 25 23
P265GH ≥265 410-570 23 21
13CrMo4-5 ≥290 440-590 22 20
10CrMo9-10 ≥280 480-630 22 20
Equivalent steel grade:
Steel Grade Steel Standard Steel Grade Steel Standard Steel Grade
P235GH DIN 17175 St 35.8
P265GH DIN 17175 St 45.8
16Mo3 DIN 17175 15Mo3
10CrMo55 15Mo3 BS 3606 621
13CrMo45 DIN 17175 BS 3606 620
10CrMo910 DIN 17175 13CrMo44 BS 3606 622
25CrMo4 10CrMo910
P355N DIN 17179 StE 355
P355NH DIN 17179 TStE 355
P355NL1 DIN 17179 WStE 460
P460N DIN 17179 TStE 460
P460NH DIN 17179 WStE 460
P460NL1 DIN 17179 TStE 460
Dimension for EN10216-2 Steel pipe
EN 10216-2 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
EN 10216-2 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
Inspection and Test For EN 10216-2 Steel Pipe
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