Is DIN 1629 Still Valid?

Is DIN 1629 Still Valid? Replacement by EN 10216-1

DIN 1629:1984-10 was replaced by EN 10216-1 (seamless steel tubes for pressure purposes, Part 1: non-alloy steel tubes with specified room temperature properties). DIN EN 10216-1:2014-03 is the edition that replaced the earlier 2002 and 2004 editions. EN 10216-1 does not include permissible operating pressures, and it defines two quality levels (TR1 and TR2) for each strength level.

The grades below are approximate correspondences only. Yield strength, tensile range and chemical limits differ, so check the project specification before substituting one for the other.

Part of DIN 1629’s scope also moved to other EN standards, such as EN 10297-1 for mechanical and general engineering tubes.

What are the application areas of DIN 1629 seamless steel pipe?

1. Chemical industry: Used for pipelines in chemical plants that carry process media. Unalloyed steel has no special corrosion resistance, so suitability depends on the medium, and a corrosion allowance, coating or lining may be needed.

2. Container manufacturing: Commonly used for tanks that store liquids or gases. The strength of DIN 1629 seamless steel pipes meets the requirements of such containers, provided the design and sealing details are specified correctly.

3. Pipeline engineering: Suitable for general pipeline systems, such as industrial pipelines and building water supply and drainage pipelines. It can withstand a certain pressure within the limits of the design code.

4. Mechanical manufacturing: Widely used in general mechanical engineering, as a structural part or for components with requirements on strength and toughness, such as hydraulic cylinders.

Read a full guide: DIN 1629 Seamless Steel Pipe

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