The FFX Tube Mill incorporates the internationally advanced FFX forming process, which offers a range of advantages including stable forming, excellent surface quality of steel tubes, and easy to change specifications. This FFX forming machine is divided into two sections: rough forming and fine forming. The rolls in the rough forming section can accommodate various specifications of steel tubes, reducing the number of rolls required by 30% to 60% compared to conventional roll forming units. This not only saves on roll inventory but also minimizes roll changeover and adjustment time, significantly enhancing production efficiency. Additionally, the use of segmented rolls instead of integral rolls reduces the need for spare parts storage.

Working Principle of FFX Pipe Making Machine

The FFX (Flexible Forming and expanding) pipe making machine is an advanced tube forming system that utilizes a single set of universal forming rolls to produce different pipe sizes without roll changing. industrial pipe making machine significantly improves production efficiency, reduces downtime, and enhances dimensional accuracy.

The FFX tube mill uses adjustable common rolls in the breakdown forming section. Instead of replacing a complete roll set for each pipe diameter, operators select the required specification through the PLC, and the roll positions are automatically adjusted. Fin-pass and sizing rolls may still require adjustment or quick replacement.

Process Overview OF FFX Tube Production Line:

1. Uncoiling & Shearing
   Steel coils are uncoiled and cut into strips with the required width.

2. Strip Entry & Welding Preparation
   The strip passes through a shear and end welder, then enters the accumulator or loop bridge for continuous feeding.

3. Flexible Forming (FFX System)

• The strip is gradually formed into a round tube by universal shared rolls, not fixed per size.

• Roll stands automatically adjust position via servo motors or hydraulic controls to match the desired pipe diameter.

4. High-Frequency Welding (ERW)
   The edges of the formed tube are heated by high-frequency induction and pressed together to form a solid longitudinal weld seam.

5. Weld Seam Scarfing & Cooling
   Internal and external weld beads are removed. The tube is then air or water cooled.

6. Sizing and Straightening
   The tube enters a series of sizing stands to achieve final outer diameter and roundness. Straightening follows.

7. Cutting to Length
   A flying saw or cold saw cuts the pipe to the required length without stopping the line.

8. Output & Stacking
   Finished pipes are conveyed to a run-out table and bundled for packaging.

Faster Size Changeover

FFX technology significantly reduces specification changeover time. Breakdown roll positioning can typically be completed within 15–30 minutes, while a complete size change may take approximately 1–2 hours, depending on the tube size, wall thickness and line configuration.

Reduced Roll Investment

Shared forming rolls can reduce the required number of roll sets by approximately 30%–60%. This lowers tooling purchasing, storage, maintenance and roll-handling costs, especially for factories producing multiple pipe sizes.

Improved Forming Accuracy

PLC-controlled roll positioning and stored production recipes improve repeatability between production batches. The system helps maintain stable pipe diameter, roundness, weld seam position and forming consistency while reducing manual adjustment errors.

Key Features of FFX Technology: