本文件规定了用于制造固定海洋结构物的可焊接结构钢（不包括空心截面）的要求。本标准中的厚度限制为63mm（含63mm）。对于具有横向机械性能的钢材（命名为xL1O），法兰宽度小于180 mm的截面和法兰宽度小于90 mm的槽钢不能订购。如果保持本欧洲标准的技术要求，则可商定更大的厚度。本欧洲标准适用于设计用于海上作业的海洋结构物用钢，但不适用于制造海底管道、立管、工艺设备、工艺管道和其他公用设施用钢。它主要适用于北海地区，但也可能适用于其他地区，前提是适当考虑当地条件，例如设计温度。注:本文件有一个关于北极地区固定式海洋结构物钢材资格预审的资料性附录C。规定的最小屈服强度高达460兆帕，以及温度低于-40°C时的冲击性能。

This document specifies requirements for weldable structural steels, in the form of sections (e.g. H-, I-, Z-sections, U-channels, angles and tees) excluding hollow sections, to be used in the fabrication of fixed offshore structures. The thickness limitation in this standard is up to and including 63 mm. For steel qualities with mechanical properties in the transverse direction (named xL1O) sections with flange widths smaller than 180 mm and channels with flange widths smaller than 90 mm cannot be ordered. Greater thicknesses may be agreed, provided the technical requirements of this European Standard are maintained. This European Standard is applicable to steels for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping and other utilities. It is primarily applicable to the North Sea Sector, but may also be applicable in other areas provided that due consideration is given to local conditions e.g. design temperature. NOTE This document has an informative Annex C on the prequalification of steels for fixed offshore structures in arctic areas. Minimum yield strengths up to 460 MPa are specified together with impact properties at temperatures down to -40 °C.