Great Wall is a 10+ year square tube mill manufacturer, specializing in FFX technology-based pipe mill lines. Our φ219mm FFX tube mill is designed for large-diameter square/round pipe production, with stable forming, quick spec change, and full customization – helping clients (like construction, industrial pipe factories) reduce costs and expand production.
Main Features & Advantages
Direct Square Forming Capability: This line can form square or rectangular profiles directly without needing separate bending/forming lines, providing high efficiency.
High Precision & Dimensional Stability: The precise roll design and control system ensure uniform wall thickness and straightness.
Flexible Production / Fast Changeover: As a **square tube mill manufacturer** we design quick roll-change systems to shorten downtime when switching sizes.
Advanced Welding & Seam Quality: Solid-state high-frequency welding ensures smooth weld seam, minimal defects, and strong mechanical integrity.
Automation & Digital Control: PLC + HMI interfaces, real-time monitoring, fault diagnosis, and parameter memory facilitate operation and maintenance.
Robust Structure & Durability: Heavy-duty frame, vibration absorption, precise alignment ensure long-term stability under continuous operation.
FAQ – Frequently Asked Questions
Q:What sizes of square profiles can your 219 mm square tube mill produce?
A:It supports square/rectangular profiles up to ~219 mm side dimension, with wall thickness between 2.0 – 8.0 mm. Custom ranges possible upon request.
Q:Do you accept custom profile dimensions?
A:Yes, as a **square tube mill manufacturer** we can adapt tooling and roll sets to custom square/rectangular sizes if within machine limits.
Q:Is a round-to-square conversion necessary?
A:No, this FFX line supports **direct forming** of square / rectangular pipes, eliminating the extra bending or forming stages.
Q:What services do you provide besides equipment?
A:We offer full turnkey services: manufacture, shipping, installation, commissioning, operator training, and after-sales support.
If you are interested in the 219 mm square tube mill or want a customized square tube production solution from a reliable square tube mill manufacturer, please contact us now for a detailed quotation and technical consultation.
| Item name | Technical Parameters |
| Round pipe diameter | φ114～φ219mm |
| Pipe Thickness | 2.5mm～8.0mm |
| Raw Material | low - carbon steel, low - alloy steel, high - strength steel |
| Finish Pipe Length | 4m-15m |
| Coils Weight | ≤15T |
| Forming speed | 10-45m/min |
| Welding mode | Solid state high frequency welding |
| Power of High frequency welder | 600 KW |
| Installation Capacity | 1200KW |
Square Tube Mill Manufacturer - φ219mm Mill Parameter Advantages for You
Large square pipe compatibility: Matches round pipe φ114-219mm (corresponding square pipe specs) and 2.5-8.0mm thickness – our Square Tube Mill Manufacturer provides one-stop equipment for your large-diameter square pipe production, no need to buy separate mills.
High-power welding (600KW): As a professional Square Tube Mill Manufacturer, we equip the mill with 600KW solid-state high-frequency welding – ensures strong welds for thick-walled square pipes, reducing your production defect rate to ≤0.5%.
Heavy coil support (≤15T): The mill from our Square Tube Mill Manufacturer supports 15T coils – continuous material supply for your 24-hour production, avoiding frequent coil replacement and improving overall efficiency.
Custom pipe length (4-15m): We provide customized finish pipe length as a Square Tube Mill Manufacturer – adapts to your client’s needs (e.g., long square pipes for infrastructure, short ones for machinery), enhancing your market competitiveness.
