Executive summary
Square steel tube leaves the mill as individual lengths and has to leave the plant as a bundle, and making the bundle by hand sets its geometry by eye. This automatic square tube bundle making and strapping machine forms and straps bundles automatically, holding bundle geometry consistent under PLC control. We build automatic square tube bundle and strapping machines. Tube range and bundle plan are confirmed per project.
Table of Contents
- Why bundle making is a precision step
- What the machine does
- Making the bundle
- Strapping the bundle
- Consistent bundle geometry
- PLC controlled operation
- Typical configuration
- What the video shows
- Selection checklist
- Operation and safety
- Engineering FAQ
- Next step
- Related reading
- Sources and standards
Why bundle making is a precision step
Square tube is transported and sold in bundles, and a bundle that is not square at the corners is a bundle that stacks badly and ships badly. Making the bundle by hand lets the geometry drift piece to piece. Bundle making is therefore a precision step, the place where automation holds the shape. The tube range and bundle plan are confirmed per project.
What the machine does
The machine forms square tube into a bundle and straps it automatically, taking individual tubes and delivering a strapped, consistent bundle. Forming the bundle and strapping it run in sequence on the machine, so each bundle is made the same way. Because both steps are machine set, bundle geometry does not depend on the operator. The covered cycle is confirmed per project.
Making the bundle
Batch forming gathers the tube into its set bundle count and pattern before the straps go on. Making the bundle means every bundle holds the same tubes in the same arrangement. A bundle made evenly is the one that straps evenly and stacks firmly. The bundle count and pattern follow the tube and its shipping plan, confirmed per project.
Strapping the bundle
The strapping step applies straps around the formed bundle, holding the tube together as one handled unit. Strapping fixes the geometry the forming made, keeping the corners and layers in place. Machine-applied straps are even and tight, at the positions the bundle needs. The strap pattern follows the bundle, confirmed per project.
Consistent bundle geometry
Consistent geometry is the bundle having the same shape and the same straps, bundle after bundle, so it stacks and ships predictably. Geometry consistency is what a customer notices first and what transport depends on. The machine holds the geometry because both forming and strapping are program-set. The geometry standard is confirmed per project.
PLC controlled operation
The machine runs under PLC control, which sets the forming pattern, strap positions and cycle as one program. PLC control is what makes the system repeatable and what lets settings change cleanly between tube sizes. The operator selects the recipe and the system applies it. The PLC program and recipes follow the tube range, confirmed per project.
Typical configuration
Figures below list functional design boundaries rather than numeric values, and are confirmed per project.
| Parameter | Typical range, confirmed per project |
|---|---|
| Tube | square steel range |
| Bundle | count, pattern |
| Strapping | strap plan |
| Control | PLC |
| Output | stable bundle |
| Electrical supply | 380 V three phase 50 Hz, or 220 V single phase for light machines, selected per project |
What the video shows
Our footage shows an automatic square tube bundle making and strapping machine. It is a general demonstration, so your tube range and bundle plan are confirmed with us per project.
Selection checklist
| Question | Confirm per project |
|---|---|
| Tube range | square sizes |
| Bundle | count, pattern |
| Strapping | plan |
| Control | PLC |
| Output | handling |
| Electrical supply | voltage, phase and frequency on site |
Operation and safety
Run the recipe from the panel and the machine forms and straps each bundle automatically. Keep clear of the forming area, strap heads and outfeed while the machine runs, with guarding and emergency stops at the operator position. Routine checks cover the forming, strap heads, transfer, sensors and control, per the machine manual. Confirm the recipe against the tube before each run so bundles come out square.
Engineering FAQ
Q: Why is bundle making precise work? A: A bundle that is not square at the corners stacks and ships badly.
Q: What does the machine do? A: It forms square tube into a bundle and straps it in sequence.
Q: How is geometry held? A: Forming and strapping are program-set, so each bundle matches the next.
Q: Why PLC control? A: It sets pattern, straps and cycle as one repeatable recipe.
Q: What comes out? A: A consistent, strapped square tube bundle.
Next step
- Email us at info@fhopepack.com with your tube range and bundle plans.
- We send a bundle and strapping proposal and a layout drawing within 48 hours.
- We arrange a site survey to confirm tube range and line position.
Related reading
- Steel tube bundle stacking and strapping line
- Automatic tying and packing line for steel pipe bundles
- Online automatic steel strapping machine
- FHOPE packing machinery product lines
Sources and standards
- ISO 12100:2010 Safety of machinery, general principles for design and risk assessment
- EN 415-10:2014 Safety of packaging machines, general requirements
- EN ISO 13849-1:2023 Safety of machinery, safety-related parts of control systems
FHOPE automatic square tube bundle making and strapping machine demonstration video. Reviewed as a general demonstration; tube range confirmed per project.
Last reviewed: 2026-10-10
