GB channel 10# weighs 10.0 kg/m, 20a weighs 22.6 kg/m and 40a tops the series at 58.9 kg/m; European UPN channels run UPN100 = 10.6 kg/m up to UPN300 = 46.2 kg/m. Channels carry purlins, trailer frames and racking — supplied cut-to-length with 3.1 MTC from 5 tons.
Channels are the workhorse of secondary steel: purlins, trailer beds, rack uprights, machine frames. Buyers ask for them by designation — "25a channel", "UPN 200" — and every quotation starts from the weight per meter. Both major systems below, with the sizes that actually move in trade.
GB Channel Steel 5#–40a (kg/m)
| Designation | Height × Leg (mm) | Weight (kg/m) | Typical Use |
|---|---|---|---|
| 5# | 50 × 37 | 5.4 | Light frames, brackets |
| 6.3# | 63 × 40 | 6.6 | Small supports |
| 8# | 80 × 43 | 8.0 | Equipment frames |
| 10# | 100 × 48 | 10.0 | Racking, fencing posts |
| 12.6# | 126 × 53 | 12.3 | Machine bases |
| 14#a | 140 × 58 | 14.5 | Trailer cross members |
| 16#a | 160 × 63 | 17.2 | Purlins (heavy), platforms |
| 18#a | 180 × 68 | 20.2 | Structural framing |
| 20#a | 200 × 73 | 22.6 | Warehouse framing |
| 25#a | 250 × 78 | 27.4 | Trailer main beams |
| 32#a | 320 × 88 | 38.2 | Heavy racks, machinery |
| 40#a | 400 × 100 | 58.9 | Heavy structural |
b and c variants (thicker flanges) add 2–8 kg/m per size — full list on request.
European UPN Channels (kg/m)
| UPN | Weight (kg/m) | UPN | Weight (kg/m) |
|---|---|---|---|
| UPN 100 | ≈ 10.6 | UPN 180 | ≈ 22.0 |
| UPN 120 | ≈ 13.4 | UPN 200 | ≈ 25.3 |
| UPN 140 | ≈ 16.0 | UPN 220 | ≈ 29.4 |
| UPN 160 | ≈ 18.8 | UPN 240 | ≈ 33.2 |
UPN per EN 10365, values rounded — official tables for shop drawings. Compare with the I-profile choices in H beam vs I beam and the full GB weight tables.
Where Channels Go
- Purlins and girts: 10#–16# hot-rolled where cold-formed C/Z purlins are not specified.
- Trailer and truck bodies: 14#–25a for cross members and main rails.
- Racking and shelving: 10#–14# uprights and beams.
- Machine frames & skids: 8#–12.6# with drilled holes — drilling before shipping →
Supply Details
Grades Q235B / S235JR / S275JR / S355JR; lengths 6 m / 9 m / 12 m or cut-to-length ±2 mm; black, primed or galvanized. EN 10204 3.1 MTC with every order; MOQ 5 t, mixed channels + angles + beams in one container welcome. Angle bar product page →
Channel list to tonnage — priced the same day
Send designations and lengths to [email protected] or WhatsApp +86 191 5745 8011 — FOB/CIF quotation with 3.1 MTC, MOQ 5 tons.
Request Channel Quote