Seamless Pipes and Tubes for Pressure Applications
Date:2018-07-02 View:6168 Tags:Seamless Pipes and Tubes for Pressure Applications
DIN 1629 applications the overheated boilers, as minimum thickness ferrite and seamless steel pipes, and as heat exchangers via austenitic pipes.
THE EN 10216 COMPRISES SEVERAL PARTS. THE PARTS THAT ARE RELEVANT TO US ARE AS FOLLOWS:
EN 10216 Part 1: non-alloy pipes with specified properties at room temperature
EN 10216 Part 2: non-alloy pipes with specified properties at higher temperatures
EN 10216 Part 3: alloy pipes made from fine-grained steel for any temperature
This part of EN10216 may also be applied for tubes of non-circular cross section; necessary modification should be agreed a time of enquiry and order.
Some examples:
EN 10216-1, QUALITY P235TR2 (FORMERLY DIN 1629, ST.37.0)
P = Pressure
235 = minimum yield strength in N/mm2
TR2 = quality with specified properties relating to aluminum content, impact values and inspection and test requirements. (In contrast to TR1, for which this is not specified).
EN 10216-2, QUALITY P235 GH (FORMERLY DIN 17175, ST.35.8 CL. 1, BOILER PIPE)
P = Pressure
235 = minimum yield strength in N/mm2
GH = tested properties at higher temperatures
EN 10216-3, QUALITY P355 N (MORE OR LESS EQUIVALENT TO DIN 1629, ST.52.0)
P = Pressure
355 = minimum yield strength in N/mm2
N = normalized*
* Normalized is defined as: normalized (warm) rolled or standard annealing (at a min temperature of 930°C). This applies to allqualities designated by the letter ‘N’ in the new Euro Standards.
Pipes: the following standards are replaced by DIN EN
PIPES FOR PRESSURE APPLICATIONS OLD STANDARD
Execution
Norm
Steel grade
Welded
DIN 1626
St.37.0
Welded
DIN 1626
St.52.2
Seamless
DIN 1629
St.37.0
Seamless
DIN 1629
St.52.2
Seamless
DIN 17175
St.35.8/1
Seamless
ASTM A106*
Grade B
Seamless
ASTM A333*
Grade 6
PIPES FOR PRESSURE APPLICATIONS NEW STANDARD
Execution
Norm
Steel grade
Welded
DIN EN 10217-1
P235TR2
Welded
DIN EN 10217-3
P355N
Seamless
DIN EN 10216-1
P235TR2
Seamless
DIN EN 10216-3
P355N
Seamless
DIN EN 10216-2
P235GH
Seamless
DIN EN 10216-2
P265GH
Seamless
DIN EN 10216-4
P265NL
* ASTM standards will remain valid and will not be replaced by Euronorms in the near future
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