: To prevent lamellar tearing in highly restrained joints, plates are often tested for reduction of area in the through-thickness direction (Z25 or Z35 ratings). 3. Non-Destructive Testing (NDT)
: Must meet minimum thresholds dictated by the grade and plate thickness (strength generally drops slightly as plate thickness increases).
Focus shifted to M (thermomechanically rolled) grades over N (normalized) grades for better strength/toughness balance.
The European standard specifies the technical delivery conditions for weldable structural steels used in the fabrication of fixed offshore structures. Designed to withstand harsh marine environments, high wave loads, and low temperatures, this standard is a critical document for materials engineers, procurement specialists, and fabricators in the oil, gas, and offshore wind industries. en 102251 pdf
The EN 10225 standard is split into multiple parts based on the product form. .
EN 10225, officially titled "Weldable structural steels for fixed offshore structures — Technical delivery conditions" , is an authoritative European standard that defines the strict requirements for hot-rolled structural steels specifically designed for offshore applications. Offshore structures face extreme environmental conditions—severe low temperatures, constant dynamic loads from wind and waves, and a highly corrosive marine atmosphere. Standard structural steels (like those from the EN 10025 series) are often insufficient for these demands. In comparison, EN 10225 steels offer significantly improved properties, including higher strength, superior toughness, and optimized weldability.
There are two primary theories:
The current and most up-to-date version of the standard is the series. Each part was published between March and June 2019. These supersede the previous single-part standard from 2009.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
| Part | Title | Product Form | |------|-------|---------------| | EN 10225‑1 | Plates | Steel plates (including plate for structural hollow sections) | | EN 10225‑2 | Sections | H‑, I‑, Z‑sections, U‑channels, angles and tees (excluding hollow sections) | | EN 10225‑3 | Hot finished hollow sections | Seamless and welded hot finished hollow sections | | EN 10225‑4 | Cold formed welded hollow sections | Submerged arc welded (SAW) and high frequency welded (HFW) cold formed hollow sections | : To prevent lamellar tearing in highly restrained
The EN 10225 standard is split into four distinct parts based on the product form: : Heavy steel plates. Part 2 : Sections (beams, channels). Part 3 : Hot-finished hollow sections. Part 4 : Cold-formed hollow sections.
Thermomechanically rolled (or normalized, depending on grade)
Navigating the documentation, technical revisions, and material specifications required for engineering procurement requires a deep dive into the ecosystem. Structural Breakdown of the EN 10225 Series Focus shifted to M (thermomechanically rolled) grades over