本文件规定了圆形、方形、矩形或椭圆形高强度、耐候性热加工无缝、电焊和埋弧焊钢结构空心型材的交货技术条件。 它适用于热成型、有或无后续热处理的空心型材，或在580℃以上进行后续热处理的冷成型中空型材，以获得与热成型产品相同的机械性能。 注1公差、尺寸和截面特性要求 在EN 10210-2中有规定。 注2:用户应注意，尽管EN 10219-3中的冷成型等级具有与本文件中热加工等级相同的机械性能，但EN 10210-2和EN 10219-2中的方形和矩形空心截面的截面性能并不相等。 注3:本文件规定了一系列材料等级，用户可选择最适合预期用途和使用条件的等级。成品空心型材的等级和力学性能 一般可与EN 10025-4、EN 10025-5和EN 10025-6中的标准进行比较。 注4:EN 10225系列涵盖了海上结构物用无缝和焊接钢结构空心型材的要求。 注5螺旋焊接空心型材在涉及动态行为（疲劳应力）的应用中应谨慎使用，因为到目前为止，有关其性能的数据不足。

This document specifies technical delivery conditions for high strength and weather resistant hot-finished seamless, electric welded and submerged arc welded steel structural hollow sections of circular, square, rectangular or elliptical forms. It applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold with subsequent heat treatment above 580 °C to obtain equivalent mechanical properties to those obtained in the hot formed product. NOTE 1 The requirements for tolerances, dimensions and sectional properties are specified in EN 10210-2. NOTE 2 The attention of users is drawn to the fact that whilst cold formed grades in EN 10219-3 can have equivalent mechanical properties to hot-finished grades in this document the sectional properties of square and rectangular hollow sections in EN 10210-2 and EN 10219-2 are not equivalent. NOTE 3 A range of material grades is specified in this document and the user can select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties of the finished hollow sections are generally comparable with those in EN 10025-4, EN 10025-5 and EN 10025-6. NOTE 4 The requirements for seamless and welded steel structural hollow sections for use in offshore structures are covered in the EN 10225 series. NOTE 5 Spiral welded hollow sections are expected to be used with caution in applications involving dynamic behaviour (fatigue stress) as, up to now, there is insufficient data regarding their performance.