Beams are distinguished by the thickness of the walls and shelves, the location of the edges of the shelves (with parallel faces, with sloping inner faces), by purpose, mode of production, technical characteristics, for example:
- I-beam steel special;
- I-beam made from carbon and low-alloy steel;
hot - rolled steel beam.
Usually the manufacturer of the beams is made from carbon and low alloy steel.
The range of these products corresponds to:
I-beams with parallel faces shelves - GOST 26020-83 and the HUNDRED ASCM 20-93:
B - normal(20B, and so on);
W h (S and so on);
To - column (20K, and so on);
I-beams with sloping inner faces:
normal (slope of the inner faces of the shelves 6-12%) - GOST 8239-89;
special (M & C) - GOST 19425-74