I-beam
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Igiti cyubatswe I-beam ASTM ishyushye-yuzuye ibyuma bya karubone I-beam
I-beam, izwi kandi nk'icyuma, ni icyuma gipima igice cya I.I-beam igabanijwemo ibice bishyushye I-beam n'umucyo I-beam.Nigice cyicyuma gifite igice cya I.
