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AD 295: Hollow Sections and Steel Grades

In the last few years steel grade S355 has become the normal production grade for both cold formed (BS EN 10219) and hot finished (BS EN 10210) hollow sections used in structural applications.  Steel grade S275 hollow sections are still produced, but can be difficult to obtain.

SCI therefore recommends that structural designs using hollow sections should be based on steel grade S355.

As noted in AD 271 Corus Tubes manufacture two ranges of structural hollow sections, which should be suitable for almost all practical cases:

  • Cold Formed Sections to BS EN 10219 S355 J2H: Brand name – HYBOX®
  • Hot Finished Sections to BS EN 10210 S355 J2H: Brand name – Celsius® 355
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