I-beam B1, B2, B3, B4, K1, K2, K3, K4, Sh1, Sh2, Sh3, Sh4, M
I-beam GOST 26020-83, 8239-89, STO ASChM 20-93, hot-rolled, electric-welded, steel, D= 8 - 120, B1, B2, B3, B4, K1, K2, K3, K4, Ш1, Ш2, Ш3 , Sh4, M. Steel 3sp5, 3sp, 09g2s, 255 345
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