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It specifically does not apply to steels for subsea pipelines, risers, process equipment, or piping.

The 2019 version introduced several significant updates to accommodate deeper waters and harsher environments, including higher-strength grades and increased thickness limits. Steel Grade Series Maximum Standard Thickness Delivery Condition Up to 200 mm Normalized (+N) S355/420/460/500MLO Up to 120 mm Thermomechanically Rolled (+M) S420 to S690QLO Up to 150 mm Quenched and Tempered (+Q)

The standard covers weldable structural steels primarily intended for the North Sea sector, though it is used globally wherever design temperatures and operational conditions require similar performance.

Fabrication of jackets, topside supports, and piles for fixed offshore structures.