| Size, mm | Steel grade | Standard |
| 125х125х8000–12000 | St3sp, St4sp, St5sp, SAE1006, SAE1008 | GOST 380 |
|
130х130х8000–12000 140х140х8000–12000 150х150х8000–12000 |
Carbon quality and alloy structural steel, SAE1006, SAE1008 | GOST 4543 |
| GOST1050 | ||
| * Specification |
* On customer request, it is possible to produce products with deviations from the requirements and standards
| Size, mm | Side deviation limit, mm | Difference of diagonals, mm | Weight 1 long meter, kg | Corner radius, max, mm | Billet bending, not above % of length | Billet twisting, max, deg. |
| 125×125 | ±3,75 | 3,0 | 3,0 | 3,0 | 3,0 | 3,0 |
| 130×130 | 130×130 | 130×130 | 130×130 | 130×130 | 130×130 | 130×130 |
| 140×140 | 140×140 | 140×140 | 140×140 | 140×140 | 140×140 | 140×140 |
| 150×150 | 150×150 | 150×150 | 150×150 | 150×150 | 150×150 | 150×150 |