Square Tube Mill Machine
XFX Tube Mill Machinery provides square tube mill machine solutions for producing square tubes, rectangular tubes, and related hollow section products. We configure practical tube mill lines based on your tube sizes, wall thickness, material, and production requirements.

Square Tube Mill Machine for Hollow Section Production
A square tube mill machine is used to produce square and rectangular welded steel tubes. In many production lines, round pipe is first formed and welded, then shaped into square or rectangular tubes through sizing sections and suitable roll tooling.
As a tube mill manufacturer in China, XFX configures each rectangular tube mill around the required hollow-section range. The line uses ERW tube mill machine and welded tube mill technology, with forming, high frequency welding, and sizing selected for the customer’s production needs.
Tube Products You Can Produce
- Square steel tubes
- Rectangular steel tubes
- Hollow structural sections
- Furniture tubes
- Construction tubes
- Door and window frame tubes
- General welded hollow sections
Typical Square Tube Production Process
1. Steel Strip Uncoiling
Steel coil is opened and fed into the square tube production line.
2. Strip End Welding
The end of one strip coil is joined to the beginning of the next.
3. Accumulation
An accumulator stores strip to support continuous production.
4. Forming into Round Tube
Roll tooling gradually forms the flat strip into an open round profile.
5. High Frequency Welding
The prepared strip edges are welded into a continuous round tube.
6. Square or Rectangular Sizing
Sizing rolls reshape the welded round tube into the required hollow section.
7. Straightening and Cutting
The finished profile is straightened and cut to the required length.
8. Run-out and Packing
Cut tubes are transferred for collection, handling, and optional packing.
Custom Design Based on Tube Sizes and Wall Thickness
Square and rectangular tube production requires suitable forming design, roll tooling, sizing arrangement, welding power, and cutting method. To recommend a practical machine, we need your exact square and rectangular tube size list with wall thickness.
- Square tube sizes
- Rectangular tube sizes
- Wall thickness for each size
- Material type: HR, CR, GI, PPGI, or others
- Production capacity target
- Factory voltage
- Workshop layout if available
Why Choose XFX Square Tube Mill Machine?
Factory Direct Tube Mill Manufacturer
Work directly with XFX for technical discussion, manufacturing coordination, quality control, and practical factory pricing.
Custom Roll Tooling Design
Forming rolls and sizing rolls are designed around your square and rectangular tube dimensions and wall thickness.
Stable Sizing Accuracy
A suitable sizing arrangement and controlled production support consistent hollow-section dimensions and shape.
Installation, Training, and Support
We can provide installation guidance, commissioning support, operator training, remote troubleshooting, and spare parts service.
How to Prepare Your Size List
For square and rectangular tube projects, please provide each tube size with the matching wall thickness. This helps us check whether one tube mill line can cover your range or whether multiple lines are more practical.
Example Size List
Square tube: 20x20mm x 1.0mm, 40x40mm x 1.5mm, 60x60mm x 2.0mm
Rectangular tube: 20x40mm x 1.2mm, 40x60mm x 1.5mm, 50x100mm x 2.0mm
Related Tube Mill Machinery Products
ERW Tube Mill Machine | High Frequency Welded Tube Mill | Steel Pipe Making Machine | Tube Mill Rolls | Tube Mill Auxiliary Equipment
Square Tube Mill Machine FAQ
Can the machine produce both square and rectangular tubes?
Yes, many square tube mill lines can produce both square and rectangular tubes with suitable sizing sections and roll tooling.
Can the same line also produce round pipes?
In many ERW tube mill lines, round pipe can be produced before square or rectangular sizing. The exact range depends on machine design, tube size, and wall thickness.
What information is needed for quotation?
Please provide square and rectangular tube sizes, wall thickness for each size, material, production capacity target, voltage, and destination country.
Do you provide roll tooling for square tubes?
Yes. We can design and supply forming rolls, sizing rolls, and related tooling based on your tube size range.
Do you provide installation support?
Yes. We can provide installation guidance, commissioning support, operator training, remote support, and spare parts service.
Need a Square Tube Mill Machine Quotation?
Send your square and rectangular tube sizes with wall thickness. Our technical team will help you check a suitable tube mill machine configuration.