Seamless Pipes And Tubes For Pressure Applications

Pipes for pressure applications old standard

pipes for pressure applications new standard

* ASTM standards will remain valid and will not be replaced by Euronorms in the near future

EN10216-1 / DIN1629 Standard specification

DIN 1629 is the standard specifies the Seamless Circular Tubes of Non Alloys Steels with Special Quality Requirements.

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.