The tubes are generally used. They are manufactured from steels 1, 2
| Outer size, mm | Wall thickness, mm | Length of tubes, mm | |
| A | B | ||
| 40 | 20 | 2.0; 2.5; 2.8 | According to the length of tube the random length from 4 to 9 m are tailored |
| 40 | 25 | 2.0; 2.5; 2.8 | |
| 40 | 28 | 2.0 | |
| 60 | 40 | 3.5 | |
| 50 | 25 | 2.0÷4.0 | |
| 50 | 30 | 2.0÷4.0 | |
| 25 | 28 | 2.0÷4.0 | |
| 60 | 30 | 2.0÷4.0 | |
| 80 | 60 | 2.0÷4.0 | |
| 80 | 40 | 2.0÷4.0 | |
| 100 | 60 | 2.0÷4.0 | |
According to the agreements between consumer and manufacturer other thicknesses tube manufacture are possible.
| Steel grade | Ultimate strength, |
Elongation, % |
| 333 | 12 | |
| 10 | 353 | 10 |
| 08 КП; | 314 | 13 |
| Name of parameters | Limited deviations in strict tailoring for tubes | |
| Outer sizes: | Normal | High |
| Welded steel tubes with size up 30 mm | ||
| Welded steel tubes with size over 30 up to 50 mm | ||
| Welded steel tubes with size over 50 mm | ||
| Wall thickness | ||
| Concavity of sides | ||
| up to 50 mm | 0.5 mm | 0.5 mm |
| over 50 mm | 0.75 mm | 0.5 mm |