I-beams and channels belong to the long products. They are manufactured according to the following specifications:
- Beams – per GOST 535-88 ;
- Hot-rolled steel channels – per GOST 535-88 ;
- Roll-formed steel channels – per GOST 11474-76 .
Range of sizes for these products complies with the following norms:
For I-beams with inner edges slanted:
- standard - GOST 8240-89
- special: for automotive industry - GOST 19425-74 , for railroad car building - GOST 5267.1-90
Roll-formed steel channels:
For more details see GOST norms & Technical Requirements section.