
Questions & Answers
Bent galvanized channels are made from: St2, St0, St3kp, St3ps, St3sp, St1, 20, 10, 15, 08ps, 08ks.
Rolled galvanized channels are made from: St2, St1, St3kp, 45, 35, 25, 15, 08, 10, 30, 20, St3ps, St3sp, St0.
The main GOST standard for bent galvanized channels is:
GOST 8278-83 is a standard establishing a range of bent equal-flange steel channels produced on roll-forming machines from hot-rolled or cold-rolled coiled steel. It specifies: marking, quality control, requirements for the galvanized coating and geometry, manufacturing accuracy, main dimensions, profile design, material of manufacture, and the range of application of the channels.
The main GOST standard for rolled galvanized channels is:
GOST 8240-97 is a standard establishing a range of hot-rolled steel channels for special and general purposes. The document defines symbols, geometric parameters, tolerances, and standard sizes. The standard regulates: marking, galvanized coating requirements, surface quality, mechanical properties, chemical composition of the steel, linear meter weight, geometric dimensions, tolerances, materials of manufacture, and channel types.
Table of weights of bent galvanized channels
| Size (h×b×t), mm | Weight of 1 m, kg | Meters in 1 t |
| 25×26×2 | 1.09 | 917 |
| 25×30×2 | 1.22 | 820 |
| 28×27×2.5 | 1.42 | 704 |
| 30×25×3 | 1.61 | 621 |
| 30×30×2 | 1.3 | 769 |
| 32×25×3 | 1.66 | 602 |
| 32×32×2 | 1.39 | 719 |
| 40×20×2 | 1.14 | 877 |
| 40×20×3 | 1.61 | 621 |
| 40×30×2 | 1.45 | 690 |
| 40×30×2.5 | 1.79 | 559 |
| 40×40×2 | 1.77 | 565 |
| 40×40×2.5 | 2.18 | 459 |
| 40×40×3 | 2.55 | 392 |
| 42×42×4 | 3.49 | 287 |
| 45×25×3 | 1.96 | 510 |
| 48×70×5 | 6.67 | 150 |
| 50×30×2 | 1.61 | 621 |
| 50×30×2.5 | 1.99 | 503 |
| 50×40×3 | 2.81 | 356 |
Table of weights of rolled galvanized channels
| Channel number | Height h, mm | Weight of 1 m, kg | Meters in 1 t |
| 5 | 50 | 4.84 | 206 |
| 6.5 | 65 | 5.9 | 169 |
| 8 | 80 | 7.05 | 142 |
| 10 | 100 | 8.59 | 116 |
| 12 | 120 | 10.4 | 96 |
| 14 | 140 | 12.3 | 81 |
| 16 | 160 | 14.2 | 70 |
| 18 | 180 | 16.3 | 61 |
| 20 | 200 | 18.4 | 54 |
| 22 | 220 | 20.7 | 48 |
| 24 | 240 | 23 | 43 |
| 27 | 270 | 27.7 | 36 |
| 30 | 300 | 31.8 | 31 |

