8 NB Construction Tube Mill Machine for Low Carbon Steel with 50m/min Line Speed and 2.0-8.0mm Wall Thickness
This 8 NB tube mill is engineered for producing construction tubes and structural sections with exceptional precision and efficiency. Designed specifically for low-carbon steel processing, it delivers reliable performance for industrial manufacturing applications.
| Parameter | Specification |
|---|---|
| Material Application | Hot or cold rolled steel strips, galvanized steel strips |
| Material Grade | Low-carbon steel, low alloy steel (δs≤345Mpa, δb≤610Mpa) |
| ID of Steel Strips | Φ450-Φ508mm |
| OD of Steel Strips | Φ800-Φ2000mm |
| Coiler Weight | 12000kg |
| Parameter | Specification |
|---|---|
| OD of Tube | 3NB-8NB |
| Wall Thickness Range | 2.0mm-8.0mm |
| Tube Length | 4m-12m |
| Line Speed | 50m/min |
Our unique manufacturing approach combines qualified machinery with extensive operational experience. As the only tube mill manufacturer that uses our own equipment for large-scale steel tube production, we continuously improve our machines through practical application. When you choose our equipment, you receive both advanced machinery and proven production expertise.
This tube mill system utilizes high-frequency welding and precision rollers to manufacture various steel tubes and profiles. Applications include:
- Construction tubes and structural sections
- Precision tubes for automotive applications
- Fence, heat exchanger, and furniture tubing
- Pressure tubes and API standard pipes
- Gas transportation pipelines
Our optimized production workflow ensures consistent quality and efficiency:
- Uncoiler → Shear & Welding Machine → Accumulator (Cage)
- Forming Machine → HF Welding → Sizing Machine
- Flying Saw (Cold Saw) → Run Out Table
- Hydro Testing → End Facing
For API standard requirements, we can integrate online testing equipment including hydro testing, end facing, UT testing, and ECT testing systems.
| Mill Model | OD Range (mm) | Thickness Range (mm) | Line Speed (m/min) |
|---|---|---|---|
| ZY-16 | 7.6-16 | 0.3-1.0 | 120 |
| ZY-20 | 10-25.4 | 0.3-1.5 | 120 |
| ZY-32 | 12.7-38.1 | 0.6-1.8 | 120 |
| ZY-45 | 16-50.8 | 0.7-2.0 | 110 |
| ZY-50 | 20-63.5 | 0.8-3.0 | 90 |
| ZY-60 | 25.4-76.2 | 1.0-3.2 | 80 |
| ZY-76 | 31.8-88.9 | 1.2-3.75 | 80 |
| ZY-89 | 33.4-101.6 | 1.2-4.5 | 75 |
| ZY-125 | 50.8-130 | 2.0-5.0 | 60 |
| ZY-165 | 76.2-168 | 2.0-6.0 | 50 |
| ZY-219 | 88.9-219 | 2.0-8.0 | 50 |
| ZY-273 | 89-273 | 3.0-12.0 | 40 |
| ZY-325 | 89-325 | 3.0-12.7 | 40 |
| ZY-406 | 114-406 | 4.0-16.0 | 40 |
| ZY-508 | 219-508 | 4.0-19.1 | 40 |
| ZY-610 | 273-610 | 4.0-19.1 | 40 |
| ZY-660 | 273-660 | 4.0-22 | 40 |
Since beginning exports in 2006, our tube mills have been successfully deployed in over 70 countries worldwide. Our equipment serves major markets across Asia, North America, South America, Europe, Middle East, Southeast Asia, and Africa, earning international recognition for reliability and performance.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.