Stringent sub-zero testing (-40°C) with stricter energy thresholds Standard requirements Advanced requirements with low CEV limits Z-Testing Frequently mandatory for critical joints
For each steel grade, EN 10225‑1 specifies:
A: No. API 2H and 2W are American standards for offshore plates. EN 10225 is the European equivalent, but with different toughness requirements and grade designations. Many projects accept either, but you must check project specifications.
If you have landed on this page searching for the term you are likely an engineer, procurement specialist, or fabricator working in heavy industry. It is highly probable that you are looking for the European standard for offshore structural steels. The correct designation for this standard is EN 10225 – a technical specification for weldable structural steels for fixed offshore structures.
The EN 10225-1:2019 standard, often referenced as "EN 10225" or specifically for part 1 as "EN 10225-1," is a European Standard that specifies requirements for the manufacture of submerged arc welded (SAW) and electroslag welded (ESW) steel pipes, as well as hollow sections and hollow profiles, for oil and gas transmission, structural, and other applications.
Offshore classification societies (DNV, ABS, Lloyd’s Register) will ask for the material certificate (EN 10204 3.2) referencing EN 10225.
To achieve the required strength and toughness while maintaining low carbon equivalents, EN 10225‑1 grades typically incorporate microalloying elements such as: