Small-Diameter ERW Tube Mills
Starting from Ø20 mmFurniture tube, appliance tube, light structural tube and precision small sections.
Compact layout, stable strip guidance and accurate high-speed cut-off.Discuss this line →
FENGQI MACHINERYAll equipmentRequest a proposalERW TUBE MILL MANUFACTURER
ERW Tube Mill Line
Fengqi designs complete high-frequency welded tube production lines for round, square, rectangular and special-section steel tubes. Each line is configured around the required size range, wall thickness, material, speed and downstream process.
Reference development range: Ø20–Ø660 mm
Discuss your production range
ERW PRODUCT RANGE
Choose the line around the tube—not a standard machine model.
An ERW line must be engineered as one production system. Material strength, product standard, finished tolerance, welding process, coil data, output target and workshop conditions all affect the forming design and equipment scope.
LINE FAMILIES
ERW tube mill solutions by production requirement
These groups help buyers find the right engineering route. Final model, pass design, installed power and guaranteed speed are confirmed after the complete range is reviewed.
Medium-Diameter ERW Tube Mills
Typical engineering range: Ø76–Ø219 mmStructural tube, machinery tube, water pipe, agricultural tube and solar-support products.
Flexible size coverage, dependable weld control and practical changeover design.Discuss this line →Large-Diameter ERW Pipe Mills
Typical engineering range: Ø273–Ø660 mmLarge structural sections, transmission pipe and demanding industrial applications.
Heavy-duty forming, drive-capacity calculation, seam control and downstream inspection.Discuss this line →Heavy-Wall Tube Mill Solutions
Configured by tube size and steel gradeMechanical, energy, shipbuilding and engineering applications with higher forming loads.
Reinforced stands, matched drive power and stable deformation through each forming pass.Discuss this line →Thin-Wall Large-Diameter Solutions
Representative project: Ø273 × 4.5 mmLarge, lightweight structural tube where ovality and springback require close control.
Springback management, seam-position stability and controlled sizing.Discuss this line →Square & Rectangular Tube Production
Round-to-square or direct-forming optionsHollow structural sections, frames, racking, construction and solar structures.
The forming route is selected around section range, corner radius, wall and changeover target.Discuss this line →REFERENCE MODELS
Typical ERW line capability
| Model | Round tube | Round wall (mm) | Square tube | Installed power (kW) | Speed (m/min) |
|---|---|---|---|---|---|
| GJY32 | Ø10–32 | 0.5–1.2 | — | 250 | 20–120 |
| GJY50 | Ø12–50 | 0.8–3.0 | 10×10–40×40 | 400 | 20–120 |
| GJY76 | Ø25–76 | 0.8–3.5 | 15×15–60×60 | 600 | 20–100 |
| GJY89 | Ø32–89 | 1.2–4.0 | 25×25–70×70 | 800 | 20–100 |
| GJY114 | Ø40–114 | 1.5–4.0 | 35×35–90×90 | 1,000 | 20–80 |
| GJY127 | Ø40–127 | 1.5–5.0 | 30×30–100×100 | 1,000 | 20–80 |
| GJY165 | Ø60–165 | 2.0–6.0 | 50×50–130×130 | 1,450 | 20–65 |
| GJY219 | Ø114–219 | 2.0–8.0 | 90×90–170×170 | 1,800 | 10–40 |
Reference data from established configurations. Rectangular ranges, power, footprint and guaranteed speed are confirmed for the final product mix.
TYPICAL LINE SCOPE
From coil handling to finished tube collection
Fengqi can supply an integrated line or selected sections for an existing mill. Inspection, heat treatment, zinc spraying, end finishing and automatic packing can be added according to the finished product.
- 01Coil loading car and decoiler
- 02Levelling, shear and butt-welding section
- 03Horizontal or vertical strip accumulator
- 04Forming and sizing mill with matched roll tooling
- 05High-frequency welding and weld-seam treatment
- 06Cooling, sizing and straightening section
- 07Flying saw or cold saw cut-off
- 08Run-out table, bundling and automatic packing options
APPLICATIONS
What this line can produce
- Construction and structural steel tube
- Low-pressure water and fluid pipe
- Agricultural and furniture tube
- Mechanical and special-section tube
CONFIGURATION FOCUS
Engineering features
- Custom forming and sizing design
- High-frequency welding integration
- PLC coordinated line control
- Flying cut-off and automatic handling options
TYPICAL PROCESS FLOW
A complete production sequence
Coil loading → uncoiling → strip joining → accumulation → forming → HF welding → scarfing → cooling → sizing → straightening → cut-off → collection
Final process flow and equipment scope are confirmed after the product range and quality requirements are reviewed.TECHNICAL FAQ
Common buyer questions
How is an ERW tube mill selected?
The key inputs are tube profile, minimum and maximum size, wall thickness, material grade, target speed, coil data and end-use standard.
Can one line produce round and square tube?
Yes, when the specified size relationship and forming design permit it. The final range is confirmed in the technical proposal.
Need a line matched to your product?
Send the size range, wall thickness, material grade, speed target, coil data and destination country.
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