The assortment of hot-rolled metal products having the shape of the letter "H" in cross-section is referred to as "steel I-beam" in professional engineering reference books. The product is widely used:
- In the construction industry in the manufacture of supports and ceilings.
- In the mining industry for the reinforcement of shafts and mine passages.
- In mechanical engineering for the arrangement of tracks for lifting equipment.
This type of construction provides the product with sufficient lateral and longitudinal rigidity, as well as increased resistance to torsional loads. For production, both "black" and carbon or alloyed steel grades are used (detailed information is presented on the pages of the site https://m-investspb. ru /balka-dvutavrovaya of METALINVEST St. Petersburg). The classification of I-beams is carried out in accordance with the current GOST according to the following dimensional and geometric parameters.
Slope of inner faces
This type of beams is manufactured in 2 versions according to the accuracy. The slope of the inner edges relative to the upper and lower planes is no more than 12%. Accuracy is indicated by the sign "B" - increased, or "C" - normal within the framework of GOST.
Parallel flange edges
This assortment has completely parallel upper and lower edges of the working shelves. Dimensional parameters for this type of product are set within the following limits:
- The width of the shelves is from 55 to 400 mm.
- I-beam height (from bottom to top flange) - from 100 to 1000 mm.
Products in which the width of the shelves is equal to their height are called wide-shelf, they have the abbreviation "W" in the designation. The “K” symbol indicates that the I-beam has a high resistance to compressive forces and can be used for installation as columns.
You can get more complete information and order the required type (size) of I-beams using the Internet resource of METALINVEST St. Petersburg, which supplies this type of rolled metal from the country's leading metallurgical enterprises.
