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H-beam vs. I-beam

H-beam vs. I-beam: What's the difference?

In welding, H-beam and I-beam refer to types of beams that are similar in shape but constructed differently. An H-beam is formed by welding or riveting three separate pieces of metal together, and all three parts are equal in thickness. An I-beam is made of a single piece of metal that has been shaped, and has more tapered edges.

H-beam

[ eych-beem ]
noun
  1. an I-beam having flanges the same width as its web, or connecting vertical section.

I-beam

[ ahy-beem ]
noun
  1. a rolled or extruded metal beam having a cross section resembling an I.