5inch 127mm Tube Mill

5inch 127mm ERW Tube Mill

This production line is specially designed for the efficient manufacturing of medium-to-large diameter welded steel pipes. It is widely used in structural tubing, fluid transportation, low-pressure pipelines, auto parts, machinery, and construction industries. With advanced automation and intelligent control systems, this production line offers high-speed, high-precision, and stable operation, making it an ideal solution for modern steel tube manufacturers.

Pipe Diameter: 38mm – 127mm｜Wall Thickness: 1.5mm – 5.0mm

Product Details

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Product Details

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Product Description

1. Equipment Composition

No.	Equipment Name	Function Description
1	Hydraulic Coil Car	Coil loading and centering
2	Hydraulic Uncoiler	Decoiling with auto tensioning
3	Shear & Butt Welder	Coil joint welding to reduce downtime
4	Accumulator/Looping System	Buffer storage for continuous production
5	Forming Mill (Pre-forming + Fin forming)	Gradual bending of steel strip into round tube
6	High-Frequency Welder	Solid-state HF welding for seam joining
7	Inner/Outer Burr Remover	Deburring of weld seam for better surface
8	Water Cooling System	Quick cooling to stabilize dimensions
9	Sizing & Straightening	Diameter control and roundness adjustment
10	Flying Saw	Automatic cutting to set lengths
11	Run-out Table	Pipe delivery and collection

2. Technical Parameters

Item	Specification
Material	Carbon steel, galvanized steel
Strip Width Range	120mm – 410mm
Pipe Diameter Range	Φ38mm – Φ127mm
Wall Thickness	1.5mm – 5.0mm
Forming Type	Conventional / FFX Forming (optional)
Welding Type	High-Frequency Induction (200–450kHz)
Max Production Speed	Up to 80m/min
Cutting Method	Cold saw / Hot saw / Milling cutter
Length Tolerance	±1.0mm
Control System	Siemens PLC + HMI Touchscreen

3. Equipment Advantages

✅ Stable Forming – Precision roll design with optional quick-change system
✅ High-Efficiency Welding – Solid-state HF welding ensures strong and smooth seams
✅ Accurate Cutting – Servo flying saw guarantees clean cuts and length accuracy
✅ Smart Control – Centralized control panel with remote diagnostics
✅ Energy Efficient – Low noise, low maintenance, optimized power consumption.

4. Application Fields

Oil and gas pipelines
Steel structure tubes
Agricultural irrigation and drainage
Municipal low-pressure pipe networks
Conduit and protective tubing
Machinery and engineering structural tubing

5. Operation Tips

Ensure strip is clean and oil-free before forming
Weld edges should be well aligned to avoid weak welds
Regularly clean and inspect deburring tools
Lubricate and align the forming and sizing rolls
Replace flying saw blades timely for optimal performance

The Technical Flow of the Production Line

Uncoiling → Shearing & Welding → Looping Accumulator → Forming → HF Welding → Deburring → Cooling → Sizing & Straightening → Cutting → Run-out Table

4inch 114 Tube Rolling Mill FAQS

How to change pipe sizes?

With FFX forming system, only the sizing rolls need to be changed, greatly reducing setup time.

What if the cutting length is inaccurate?

Check the servo system calibration and blade condition.

Weld strength seems insufficient

Adjust welding power, impedance position, and check magnetic rod condition.

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