> **Executive summary**
> This clip shows our steel tube strapping machine running in production. A bundle of square steel tubes stops on the roller conveyor under a strap arch, a yellow pressing head comes down on top, and the strapping head bands the bundle with steel strap and a seal. The conveyor then moves the bundle to the next strap position. Our machine applies 5 to 7 straps per bundle with 7,000–18,000 N strap tension.
Table of Contents
- What the clip shows
- Why press the bundle before strapping
- Strapping machine data
- Straps and strap length per bundle
- Selection checklist
- Safety
- Engineering FAQ
- Next step
- Related reading
- Sources
What the clip shows
| Step | What you see |
|---|---|
| Infeed | A stacked bundle of square steel tubes runs in on a blue roller conveyor |
| Pressing | A yellow pressing head on a frame comes down on top of the bundle |
| Strapping | The strap runs round the bundle through a white arch and the head tensions and seals it |
| Index | The conveyor moves the bundle on and the head straps the next position |
| Result | Close-ups show tight steel straps with a seal joint on each band |
Why press the bundle before strapping
- **Tight stack.** The pressing head closes gaps between tubes before the strap is tensioned.
- **Square shape.** The bundle keeps its stacked profile for lifting and stacking.
- **Higher tension holds.** Steel strap at high tension needs a firmly held bundle to bite into.
- **Automatic positions.** The machine performs all straps at different positions depending on bundle length.
Strapping machine data
Our published data for the steel tube bundle strapping machine:
| Item | Published value |
|---|---|
| Strap | Cold rolled low carbon steel, blued and waxed |
| Strap thickness | 0.8 / 1.0 mm |
| Seal width | 25 mm / 32 mm |
| Seal feed | Magazine, about 180 seals |
| Straps per bundle | 5 to 7 |
| Strap tension | 7,000–18,000 N |
| Feed and take-up speed | 2–3 m/s |
| Hydraulic work pressure | 80–90 bar |
| Joint | Double seal notch |
Each machine is customized, so the arch size and pressing stroke are matched to your bundle range.
Straps and strap length per bundle
**Worked example (illustrative).**
| Item | Value |
|---|---|
| Bundle (illustrative) | 6,000 mm long, 300 × 300 mm section |
| Strap spacing (illustrative) | about 1,000 mm, so 6 straps |
| Girth per strap, 4 × 300 | 1,200 mm |
| Strap per bundle, 6 × (1,200 + 100 mm joint) | about 7.8 m |
Six straps sit inside our 5 to 7 range; longer or shorter bundles change the count.
Selection checklist
- [ ] Tube size, bundle section and bundle length.
- [ ] Bundle weight.
- [ ] Straps per bundle and their positions.
- [ ] Strap thickness and seal width.
- [ ] Bundles per hour.
- [ ] Link to the bundling and stacking stations.
Safety
- Keep clear of the pressing head and strap arch while the cycle runs.
- Steel strap edges are sharp; wear gloves when handling strapped bundles.
- Stop the line before clearing a strap jam.
- For CE markets, the machine is designed to ISO 12100 and EN 415-10.
Engineering FAQ
Q: How many straps does the machine put on a bundle?
A: 5 to 7 straps, at positions set by bundle length.
Q: What strap tension does it reach?
A: 7,000–18,000 N on our published data.
Q: Which strap and seal sizes fit?
A: Steel strap 0.8 or 1.0 mm thick, with 25 or 32 mm seals.
Q: Why press the bundle first?
A: The pressing head closes gaps between tubes so the strap holds a tight, square bundle.
Q: How much strap does one bundle use?
A: About 7.8 m for a 6 m bundle with 6 straps in the worked example.
Q: How are seals supplied?
A: From a magazine holding about 180 seals.
Q: Which standards apply?
A: For CE markets, ISO 12100 and EN 415-10.
Next step
We size a steel tube strapping machine in three steps:
1. **Submit your layout drawing** with tube sizes, bundle section, length and bundles per hour, to **info@fhopepack.com**.
2. **Receive a proposal within 48 hours** with the machine data and layout.
3. **Book a site survey** so we confirm the conveyor interface.
Related reading
- [Steel Tube Bundle Strapping Machine with Seal Joint](https://www.fhopepack.com/videos/technical-breakdown-32mm-heavy-duty-steel-tube-bundle-strapping-machine-with-buckle/)
- [Steel Tube Bundle Strapping with a Travelling Head](https://www.fhopepack.com/videos/automatic-steel-pipe-bundling-and-strapping-machine/)
- [Steel Strapping Station for Square Tube Bundles](https://www.fhopepack.com/videos/heavy-duty-automated-steel-belt-strapping-system-engineering-technical-deep-dive/)
- [Steel tube bundle strapping machine data](https://www.fhopepack.com/Steel-tube-strapping-machine/steel-tube-bundle-strapping-machine.html)
Sources
- Clip: [the video on YouTube](https://www.youtube.com/watch?v=wTxazAUMBf4)
- Strap, seal, straps per bundle, tension, speed and pressure: [steel tube bundle strapping machine data](https://www.fhopepack.com/Steel-tube-strapping-machine/steel-tube-bundle-strapping-machine.html)
- Strap use: our worked example, illustrative values
- Standards scope: ISO 12100:2010; [EN 415-10:2014](https://www.nen.nl/en/nen-en-415-10-2014-en-191845)
- Proposal timing: approved house CTA (proposal within 48 hours)
Last reviewed: 2026-10-10
