This European Standard specifies the technical delivery conditions for two qualities TR1 and TR2 of seamless tubes of circular cross section with specified room temperature properties made of non-alloy quality steel.
This type of seamless pipes is considered for pressure purposes. This feature of the seamless pipes of stainless steel is essential because this type of pipes is constantly put to use where extreme conditions prevail and where safety of people and the trouble-free operation of plant and equipment must be ensured.
Tubes acc. to DIN EN 10216-5 come in a length of 5950 ± 50 mm Tubes are permanently marked over their full length. Ra values are not defined for the inner surface. The outer surface is free of longitudinal and vertical scratches with a Ra value ≤ 1,00 µm (40 µin).
The documentation of the pipes includes an Inspection Certificate 3.1 according to DIN EN 10204. Complete list of approvals is available on request.
Seamless steel tubes for pressure purposes
The EN 10216 Euronorm replaces the old DIN 17175 and 1629 standards. This standard is designed for pipes used in pressure applications, such as a pipeline. This is why the associated steel qualities are designated by the letter P for ‘Pressure’. The value that follows this letter designates the minimum yield strength. The subsequent letter designations provide additional information. The EN 10216 comprises several parts. The parts that are relevant to us are as follows:
| OLD | New | |||||
| Execution | Norm | Steel grade | Execution | Norm | Steel grade | |
| Welded | DIN 1626 | St.37.0 | Welded | DIN EN 10217-1 | P235TR2 | |
| Welded | DIN 1626 | St.52.2 | Welded | DIN EN 10217-3 | P355N | |
| Seamless | DIN 1629 | St.37.0 | Seamless | DIN EN 10216-1 | P235TR2 | |
| Seamless | DIN 1629 | St.52.2 | Seamless | DIN EN 10216-3 | P355N | |
| Seamless | DIN 17175 | St.35.8/1 | Seamless | DIN EN 10216-2 | P235GH | |
| Seamless | ASTM A106* | Grade B | Seamless | DIN EN 10216-2 | P265GH | |
| Seamless | ASTM A333* | Grade 6 | Seamless | DIN EN 10216-4 | P265NL | |
Our EN 10216 Seamless Stainless Steel pipes for Pressure Purposes are made to withstand the greatest heat and the highest pressure; they are unaffected by acids and don't give corrosion a chance! A seamless stainless steel pipe or tube can pass through more than 100 production steps before taking its final form and quality.
