Seamless Pipes and Tubes for Pressure Applications

Seamless high-temperature tubes and furnace tubes suitable for use in applications with temperatures above 500ºC (932ºF).

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

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:

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) EN 10216-2, QUALITY P235 GH (FORMERLY DIN 17175, ST.35.8 CL. 1, BOILER PIPE) EN 10216-3, QUALITY P355 N (MORE OR LESS EQUIVALENT TO DIN 1629, ST.52.0)

* 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

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Seamless pipe Specification, standard and identification

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.



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