Automatic Tube Mill Lines: Rugged Engineering for High-Precision Pipe Production
Practical Automation for Real Operators Our lines are built to handle carbon steel, galvanized, and stainless steel strips with a heavy emphasis on uptime. By integrating specialized PLC logic, we’ve synchronized the flow from the uncoiler to the final discharge. This isn't just about automation for the sake of tech; it’s about making sure that when you need to switch from round to square profiles, the transition is fast, and the first pipe off the line is just as accurate as the last.
Technical Highlights That Make a Difference:
Stress-Free Sizing: Our sizing sections use high-grade Turks heads to actively neutralize the internal stresses created during forming. This means your tubes stay straight and don't "bow" after cutting.
Stable High-Frequency Welding: We pair the mill with solid-state H.F. welders that deliver a concentrated heat zone. The result is a clean, reliable seam that stands up to secondary processing without splitting.
Reinforced Mill Base: High-speed production creates vibration. We build our frames with extra reinforcement to absorb that energy, which extends the life of your tooling and keeps your tolerances tight year after year.
Clean-Cut Flying Saws: Our automated saws track the line speed perfectly, delivering burr-free cuts that eliminate the need for an extra de-burring station.
If you’re looking for a production line that values performance over fancy buzzwords, MIVI’s mills are built for you.

Our Product
MIVI High-frequency Welding Pipe Making Machine Line
Item No. |
Outer diameter |
Wall thickness |
Production speed |
Driving motor |
HF welder power |
|---|---|---|---|---|---|
| MG-16 | 7mm-25mm | 0.3mm-1.0mm | 30-100m/min | 22kw*1set | 60kw |
| MG-25 | 8mm-32mm | 0.4mm-1.2mm | 30-100m/min | 45kw*1set | 60kw |
| MG-28 | 10mm-50.8mm | 0.5mm-1.8mm | 30-100m/min | 75kw*1set | 100kw |
Item No. |
Outer diameter |
Wall thickness |
Production speed |
Driving motor |
HF welder power |
|---|---|---|---|---|---|
| MG-32 | 13mm-50.8mm | 0.6mm-2.0mm | 30-100m/min | 90kw*1set | 100kw |
| MG-50 | 19mm-76mm | 0.7mm-2.75mm | 30-100m/min | 90kw*2set | 200kw |
| MG-60 | 25mm-80mm | 1.0mm-3.25mm | 30-80m/min | 90kw*2set | 200kw |
Item No. |
Outer diameter |
Wall thickness |
Production speed |
Driving motor |
HF welder power |
|---|---|---|---|---|---|
| MG-76 | 30mm-90mm | 1.0mm-4.0mm | 15-70m/min | 132kw*2set | 300kw |
| MG-127 | 32mm-127mm | 1.5mm-4.0mm | 20-70m/min | 160kw+200kw | 400kw |
| MG-165 | 50mm-165mm | 2.0mm-5.0mm | 30-50m/min | 200kw*2set | 500kw |
Item No. |
Outer diameter |
Wall thickness |
Production speed |
Driving motor |
HF welder power |
|---|---|---|---|---|---|
| MG-45 | 13mm-63.8mm | 0.6mm-2.0mm | 30-120m/min | 160kw*1set | 200kw |
| MG-140 | 32mm-140mm | 0.8mm-4.0mm | 30-70m/min | 320kw*1set | 300kw |
| MG-219 | 76mm-219mm | 2.0mm-8.0mm | 30-45m/min | 280kw*1set | 280kw |
Item No. |
Outer diameter |
Wall thickness |
Production speed |
Driving motor |
HF welder power |
|---|---|---|---|---|---|
| MG-254 | 89mm-254mm | 2.0mm-7.0mm | 30-60m/min | 400kw*1set | 500kw |
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