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I-BEAM- double flanged - this type of products include hot rolled double flanged beams (I-beams), produced according to GOST 535-88.
I-Beams are separated into several types:
I-Beams with parallel flanges
normal (20B, and etc.)
wide flanges (20Sh and etc.)
column (20K and etc.)
I-Beams with sloping edges of flanges
normal (edge slope 6-12%) GOST 8239-89 (№10, 12, 16 and etc.)
Assortment of such I-Beams corresponds to GOST 8239-89. Special (M and C):
M - for hanging rails (edge slope not more than 12%): 18M, 24M, 30M and etc.;
C - for reinforcement of mine shafts (edge slope not more than 16%): 14S, 20S and etc.
Assortment of such double flanged beams corresponds to GOST 19425-74. The number of the I-beam is its conventional size (height) in cm.
