EN 10216-1 non alloy steel tubes

Seamless Ferritic Alloy Steel Pipes for High Temperature Use

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.

Grades:

Chemical composition:

Steel grade C Si Mn P S Cr   b Mo   b Ni   b Al   tot

Cu  

b c

Nb   b Cr+Cu
+Mo+Ni
Steel name Steel number max.  max.  max. Max. max. max. max. max. min. max. max. max.   b
P195TR1 1.0107 0,13 0,35 0,70 0,025 0,020 0,30 0,08 0,30 - 0,30 0,010 0,70
P195TR2 1.0108 0,13 0,35 0,70 0,025 0,020 0,30 0,08 0,30 0,02   d 0,30 0,010 0,70
P235TR1 1.0254 0,16 0,35 1,20 0,025 0,020 0,30 0,08 0,30 - 0,30 0,010 0,70
P235TR2 1.0255 0,16 0,35 1,20 0,025 0,020 0,30 0,08 0,30 0,02   d 0,30 0,010 0,70
P265TR1 1.0258 0,20 0,40 1,40 0,025 0,020 0,30 0,08 0,30 - 0,30 0,010 0,70
P265TR2 1.0259 0,20 0,40 1,40 0,025 0,020 0,30 0,08 0,30 0,02   d 0,30 0,010 0,70

a Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steelmaking process.

b The content of these elements need not be reported unless intentionally added to the cast.

c Option 2: In order to facilitate subsequent forming operation, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.

d This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements which shall be reported.

Mechanical property:

Steel grade Tensile properties Impact properties
Steel name Steel number Upper yield strength ReH b min. for Wall Thickness T mm Tensile Strength Rm Elongation A min.   % 
b c
Minimum average absorbed energy KV 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
P195TR1 e 1.0107 195 185 175 320 to 440 27 25 - - -
P195TR2 1.0108 195 185 175 320 to 440 27 25 40 28 d 27
P235TR1 e 1.0254 235 225 215 360 to 500 25 23 - - -
P235TR2 1.0255 235 225 215 360 to 500 25 23 40 28 d 27
P265TR1 e 1.0258 265 255 245 410 to 570 21 19 - - -
P265TR2 1.0259 265 255 245 410 to 570 21 19 40 28 d 27

a For wall thickness greater than 60mm the mechanical properties are subject to agreement.

b See 11.2.

c l = longitudinal t = transverse

d Option 4: Additionally, longitudinal impact strength shall be verified at - 10 °C

e Tubes made to these material grades are unlikely to support the essential requirements of Directive 97/23/EC unless other criteria are taken into account, see Annex I section 7.5 of this Directive


Sunny Steel supplies EN10216-1 seamless tube in EN10204 3.1 certificate.

EN 10216 Seamless steel tubes for pressure purposes

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

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
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

Material

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.

Delivery

DIN EN 10216-1

Seamless steel tubes for pressure purposes – Technical delivery conditions -Part 1: Non-alloy steel tubes with specified room temperature properties
Specifies the technical delivery conditions for two qualities, T1 and T2, of seamless tubes of circular cross section, with specified room temperature properties, made of non-alloy quality steel…

DIN 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; German version EN 10216-2:2002+A2:2007
The document specifies the technical delivery conditions in two test categories for seamless tubes of circular cross section, with specified elevated temperature properties, made of non-alloy and alloy steel.

DIN EN 10216-3

Seamless steel tubes for pressure purposes -Technical delivery conditions – Part 3: Alloy fine grain steel tubes
Specifies the technical delivery conditions in two categories for seamless tubes of circular cross section, made of weldable alloy fine grain steel

DIN EN 10216-4

Seamless steel tubes for pressure purposes – Technical delivery conditions -Part 4: Non-alloy and alloy steel tubes with specified low temperature properties
Specifies the technical delivery conditionsin two categories for seamless tubes of circular crossection, made with specified low temperature properties, made of non-alloy and alloy steel…

DIN EN 10216-5

Seamless steel tubes for pressure purposes – Technical delivery conditions-Part 5: Stainless steel tubes; German version EN 10216-5:2004, Corrigendum to DIN EN 10216-5:2004-11; German version EN 10216-5:2004/AC:2008

This Part of this European Standard specifies the technical delivery conditions in two test categories for seamless tubes of circular cross-section made of austenitic (including creep resisting steels) and austenitic-ferritic stainless steel which are applied for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures. It is important that the purchaser, at the time of enquiry and order, takes in account the requirements of the relevant national legal regulations for the intended application.

Marking:

Delivery:



Tech & Service of Seamless pipe

Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.

How to make seamless pipe(seamless pipe process)?
Hot Piercing Workshop
Piercing process
The cross roll piercing and pilger rolling process in the size range from approx. 250 to 660 mm outside diameter.
Precision cold drawn steel tube production process
Pipe weld cracks
often follow different mechanisms can be divided into two types of thermal cracking and cold cracking.
How to calculate a steel pipe and tube theoretic weight
Calculate a steel pipe?
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe.
Pipe beveling
Pipe beveling is the process where an angle is formed between the edge of the end of a pipe or tube and a plane perpendicular to the surface.
Steel pipe cutting machine
Pipe cutting
Cutting tools have a grinding wheel piece cutting machine (also known as toothless saw), hand saw, cutter and other hand tools.
How to calculate a steel pipe and tube theoretic weight
Packing the steel pipes
There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method.

Condition on delivery:

Cold-finished/hard
(cold-finished as-drawn)

BK

No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.

Cold-finished/soft
(lightly cold-worked)
BKW
After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed
GBK
After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized
NBK
The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.
 


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