NPU Channels (UPN / U Sections)
NPU (UPN) profiles are classic European channels with tapered inner flange faces. They serve as chassis, frames, stair stringers, connections and stiffeners across steel construction — and back-to-back as columns and beams. We deliver from stock per DIN 1026-1 dimensions and EN 10279 tolerances.
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NPU (UPN) Dimensions and Section Properties
| Section | h (mm) | b (mm) | tw (mm) | tf (mm) | Area A (cm²) | Weight (kg/m) | Iy (cm⁴) | Wy (cm³) | Iz (cm⁴) | Wz (cm³) |
|---|---|---|---|---|---|---|---|---|---|---|
| NPU 50 | 50 | 38 | 5,0 | 7,0 | 7,10 | 5,6 | 26,40 | 10,60 | 9,120 | 3,750 |
| NPU 65 | 65 | 42 | 5,5 | 7,5 | 9,00 | 7,1 | 57,50 | 17,70 | 14,10 | 5,070 |
| NPU 80 | 80 | 45 | 6,0 | 8,0 | 11 | 8,6 | 106,0 | 26,50 | 19,40 | 6,360 |
| NPU 100 | 100 | 50 | 6,0 | 8,5 | 13,5 | 10,6 | 206,0 | 41,20 | 29,30 | 8,490 |
| NPU 120 | 120 | 55 | 7,0 | 9,0 | 17 | 13,4 | 364,0 | 60,70 | 43,20 | 11,10 |
| NPU 140 | 140 | 60 | 7,0 | 10,0 | 20,4 | 16 | 605,0 | 86,40 | 62,70 | 14,80 |
| NPU 160 | 160 | 65 | 7,5 | 10,5 | 24 | 18,8 | 925,0 | 116,0 | 85,30 | 18,30 |
| NPU 180 | 180 | 70 | 8,0 | 11,0 | 28 | 22 | 1.350 | 150,0 | 114,0 | 22,40 |
| NPU 200 | 200 | 75 | 8,5 | 11,5 | 32,2 | 25,3 | 1.910 | 191,0 | 148,0 | 27,00 |
| NPU 220 | 220 | 80 | 9,0 | 12,5 | 37,4 | 29,4 | 2.690 | 245,0 | 197,0 | 33,60 |
| NPU 240 | 240 | 85 | 9,5 | 13,0 | 42,3 | 33,2 | 3.600 | 300,0 | 248,0 | 39,60 |
| NPU 260 | 260 | 90 | 10,0 | 14,0 | 48,3 | 37,9 | 4.820 | 371,0 | 317,0 | 47,70 |
| NPU 280 | 280 | 95 | 10,0 | 15,0 | 53,3 | 41,8 | 6.280 | 448,0 | 399,0 | 57,20 |
| NPU 300 | 300 | 100 | 10,0 | 16,0 | 58,8 | 46,2 | 8.030 | 535,0 | 495,0 | 67,80 |
| NPU 320 | 320 | 100 | 14,0 | 17,5 | 75,8 | 59,5 | 10.870 | 679,0 | 597,0 | 80,60 |
| NPU 350 | 350 | 100 | 14,0 | 16,0 | 77,3 | 60,6 | 12.840 | 734,0 | 570,0 | 75,00 |
| NPU 380 | 380 | 102 | 13,5 | 16,0 | 80,4 | 63,1 | 15.760 | 829,0 | 615,0 | 78,70 |
| NPU 400 | 400 | 110 | 14,0 | 18,0 | 91,5 | 71,8 | 20.350 | 1.020 | 846,0 | 102,0 |
Dimensions and section properties from the EN 10365 standard tables (ArcelorMittal sales programme). Iy/Wy are strong-axis, Iz/Wz weak-axis values. Ask for a quote for the UPE (parallel flange) series. Values are for guidance; request a quote for exact dimensions and tolerances.
Applications
Chassis and frame fabricationStair stringersConnections and stiffenersMachinery and trailer building
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