Dimensions / Building materials / Steel beams / IPE beam
An IPE beam is Europe’s parallel-flange I section to EN 10365, named by its height: IPE 300 is 300 mm high and 150 mm wide, with a 7.1 mm web, 10.7 mm flanges and a 15 mm root radius, 53.8 cm² and 42.2 kg/m (ArcelorMittal, British Steel, Peiner Träger). The number is the height from IPE 80 to IPE 600; the IPE 750 sections are named by mass. At the same number IPE A is lower and lighter (IPE A 300: 297 mm, 36.5 kg/m) and IPE O higher and heavier (304 mm, 49.3 kg/m). EN 10034 allows +4 / −2 mm on a 300 mm height and ±4% on mass. A 12 m bar goes into ONE’s 40 ft box (12,032 mm) but is 2 mm longer than the ISO minimum of 11,998 mm.
| Height × width (IPE 300) | Web / flange | Mass |
|---|---|---|
| 300 × 150mm | 7.1 / 10.7mm | 42.2kg/m |
Sources: ArcelorMittal, British Steel. Checked October 2026.
Fifty IPE 300 bars of 12 m for a 40 ft box and one section measured at the mill gate are filled in: the length passes only if the box is bigger than the ISO minimum. Try 11.8 m, another section or your own readings.
Box lengths and payloads are the ones ONE prints; weights are theoretical, the way European mills invoice sections, with no allowance for the mass tolerance.
At 12 m the beam is 12,000 mm long: it goes into ONE’s 40 ft box (12,032 mm inside) with 32 mm to spare, but it is 2 mm longer than the 11,998 mm ISO 668 minimum, so measure the box you are given before you load.
Twelve-metre bars clear ONE’s 12,032 mm box by 32 mm but not the 11,998 mm ISO minimum.
50 × IPE 300 at 12 m and 42.2 kg/m is 25,320 kg, within the 26,840 kg payload ONE prints for its 40 ft box; by weight the box takes up to 53.
IPE 300 at 42.2 kg/m, the mass British Steel invoices; ONE’s 40 ft dry box carries 26,840 kg.
IPE 300 is 300 × 150 mm; EN 10034 allows +4 / −2 mm on the depth and +4 / −2 mm on the flange width, so 298–304 by 148–154 mm. Yours, 301 × 149 mm, is within both.
EN 10034 for an IPE 300: height +4 / −2 mm, flange width +4 / −2 mm.
Exporting IPE? Put a photo of a bundle end into SizeMarker, mark the section, length, grade and heat number on it, and send it with the offer.
Mark a photoHeight × width, web and flange thickness, root radius, area and mass as printed; British Steel, Peiner Träger and Stahlwerk Thüringen print the same for the sizes they roll.
| Section | h × b | tw / tf; r | Area; mass |
|---|---|---|---|
| IPE 80 | 80 × 46 mm | 3.8 / 5.2 mm; 5 | 7.6 cm²; 6.0 kg/m |
| IPE 100 | 100 × 55 mm | 4.1 / 5.7 mm; 7 | 10.3 cm²; 8.1 kg/m |
| IPE 200 | 200 × 100 mm | 5.6 / 8.5 mm; 12 | 28.5 cm²; 22.4 kg/m |
| IPE 300This page | 300 × 150 mm | 7.1 / 10.7 mm; 15 | 53.8 cm²; 42.2 kg/m |
| IPE 400 | 400 × 180 mm | 8.6 / 13.5 mm; 21 | 84.5 cm²; 66.3 kg/m |
| IPE 600British Steel prints r 20 | 600 × 220 mm | 12.0 / 19.0 mm; 24 | 156.0 cm²; 122 kg/m |
| IPE 750 × 134Named by mass, not height | 750 × 264 mm | 12.0 / 15.5 mm; 20 | 170.6 cm²; 134 kg/m |
| IPE 750 × 196 | 770 × 268 mm | 15.6 / 25.4 mm; 20 | 250.8 cm²; 196 kg/m |
Sources: ArcelorMittal · British Steel · Peiner Träger
The three keep the inner height between the flanges; the flanges and web are thinner or thicker.
| Number | IPE A | IPE | IPE O |
|---|---|---|---|
| 200Inner height 183.0 mm | 197 × 100 mm, 18.4 kg/m | 200 × 100 mm, 22.4 kg/m | 202 × 102 mm, 25.1 kg/m |
| 300This page | 297 × 150 mm, 36.5 kg/m | 300 × 150 mm, 42.2 kg/m | 304 × 152 mm, 49.3 kg/m |
| 400Inner height 373.0 mm | 397 × 180 mm, 57.4 kg/m | 400 × 180 mm, 66.3 kg/m | 404 × 182 mm, 75.7 kg/m |
| Smallest orderArcelorMittal | 5 t an order item | 5 t an order item | 40 t, a flagged section |
Sources: ArcelorMittal · Stahlwerk Thüringen
As printed by ArcelorMittal (its Table 14) and Stahlwerk Thüringen; EN 10034:1993 is the current edition.
| Item and band | Tolerance |
|---|---|
| Height, h ≤ 180 mm | +3 / −2 mm |
| Height, 180 < h ≤ 400 mmIPE 200 to IPE 400 | +4 / −2 mm |
| Height, 400 < h ≤ 700 mm | +5 / −3 mm |
| Flange width, b ≤ 110 mm | +4 / −1 mm |
| Flange width, 110 < b ≤ 210 mm | +4 / −2 mm |
| Flange width, 210 < b ≤ 325 mm | ±4 mm |
| Web, 7 ≤ tw < 10 mm | ±1 mm |
| Flange, 10 ≤ tf < 20 mm | +2.5 / −1.5 mm |
| Out of square, b > 110 mm | 0.02 b, at most 6.5 mm |
| Straightness, 180 < h ≤ 360 mm | 0.0015 × length |
| Mass and lengthEach bar | Mass ±4%; length −0 / +100 mm |
| On an IPE 300Our calculation | h 298–304, b 148–154 mm; out of square 3.0 mm; 18 mm of bow over 12 m |
Sources: ArcelorMittal · Stahlwerk Thüringen · BSI
| Mill | Range | Lengths and grades |
|---|---|---|
| ArcelorMittal | IPE 80–750 | At most 18 to 33 m, by section; grades to EN 10025-2:2019 |
| British Steel | IPE 100–750 | S235, S275, S355 (JR, J0, J2) and S355 K2; invoiced at 0.785 kg per cm² per metre |
| Peiner Träger | IPE 160–750 | Bars over 38 m on request; its IPE 750 × 137 is not standardised |
| Stahlwerk Thüringen | IPE 120–550; IPE AA 140–240 | At least 6.0 m; bundles to 24.1 m, about 5.5 t, webs flat and nested |
| Celsa | Up to 600 mm high | Up to 24 m long |
| StandardsMills still print EN 10365:2017 | Sizes to EN 10365; the 2026 edition replaced 2017 | Tolerances to EN 10034:1993, still current |
Sources: ArcelorMittal · British Steel · British Steel · Peiner Träger · Peiner Träger · Stahlwerk Thüringen · Stahlwerk Thüringen · Stahlwerk Thüringen · Celsa · BSI
No source makes any of these an equivalent of IPE; comparisons are ours, from printed sizes.
| Section | Flanges | Size and mass |
|---|---|---|
| IPE 300This page | Parallel | 300 × 150 mm, 42.2 kg/m |
| IPNEuropean standard beam; ArcelorMittal | Inner faces slope 14% | — |
| US S shapeNucor-Yamato | Inner faces slope about 16-2/3% | — |
| W12×26US | Parallel | 310 × 165 mm, 38.7 kg/m |
| JH300×150×6.5×9China, JG/T 581-2023 | Parallel | 300 × 150 mm, 36.72 kg/m: 13% lighter (our calculation) |
| Chinese I-beamGB/T 706, a different product | Sloped inner faces | — |
Sources: ArcelorMittal · Nucor-Yamato · JG/T 581-2023
| Item | Figure |
|---|---|
| 40 ft dry boxONE | Inside 12,032 mm long; door 2,340 × 2,280 mm; payload 26,840 kg |
| 40 ft high cubeONE | Inside 12,032 mm long; payload 28,800 kg |
| ISO 668 minimumIMO | 11,998 mm for a 40 ft box |
| 12 m barsOur calculation | 32 mm to spare in ONE’s box, 2 mm too long for a minimum box: measure first |
| 11.8 m barsOur calculation | 198 mm to spare even at the minimum |
| How weight is chargedBritish Steel | Mass per metre to one decimal × ordered length |
| In the check aboveOur calculation | 50 × IPE 300 × 12 m = 25,320 kg, within 26,840 kg; by weight up to 53 |
Sources: ONE · IMO · British Steel
A European I section with parallel flanges, sized to EN 10365 and named by its height: IPE 300 is 300 × 150 mm and 42.2 kg/m. ArcelorMittal rolls IPE 80 to IPE 750.
300 mm high, 150 mm wide, 7.1 mm web, 10.7 mm flanges, 15 mm root radius, 53.8 cm² and 42.2 kg/m (ArcelorMittal; British Steel and Peiner Träger print the same).
Same number and inner height, different flanges and web: IPE A 300 is 297 mm and 36.5 kg/m, IPE 300 300 mm and 42.2 kg/m, IPE O 300 304 mm and 49.3 kg/m.
No. IPE flanges are parallel; IPN flanges slope 14% on the inside (ArcelorMittal). China’s GB/T 706 I-beam is a sloped-flange section too.
Under EN 10034 an IPE 300 may be +4 / −2 mm on height and +4 / −2 mm on flange width, so 298–304 by 148–154 mm; mass ±4%, length −0 / +100 mm.
Usually: ONE’s 40 ft box is 12,032 mm inside, 32 mm more than 12 m. The ISO minimum is 11,998 mm, 2 mm short, so measure the box; 11.8 m bars fit any.
A European or Middle East buyer of IPE checks the section and its variant (IPE A, IPE, IPE O), the grade to EN 10025-2, the bar length against the box, the mass per metre the invoice uses, and the bundle weight. Mark those on a photo of your own bundle in SizeMarker, the way the picture above is labelled, and share it as one card.
