Main Features & Advantages
Stable High Frequency Welding: Ensures uniform weld seam and high mechanical strength.
Automated Control System: PLC + HMI interface allows precise adjustment of welding current, speed, and cut length.
Quick Roll Change: Efficient roll change mechanism reduces downtime and enhances throughput.
Energy-Saving Design: Optimized electrical circuits and components reduce overall power consumption.
Flexible Configuration: Optional forming and sizing modules allow customization for special pipe profiles.
FAQ – Frequently Asked Questions
Q:What size pipes can HG114 ERW tube mill line produce?
A:The line can produce pipes with OD from 89 to 114 mm and wall thickness from 2.0 to 6.0 mm. Configuration can be customized for special needs.
Q:How does ERW tube mill line differ from SAW or LSAW?
A:ERW (Electric Resistance Welding) uses high-frequency electric current to heat and join edges, ideal for small and medium diameter pipes. SAW is for larger diameters using submerged arc processes. ERW tube mill lines generally have higher speed and lower cost per meter for small/medium sizes.
Q:Do you offer installation and training?
A:Yes, we provide full services including equipment installation, commissioning, operator training, and after-sales support worldwide.
Uncoiler:The starting unit of the HG114 ERW Tube Mill Line – it stably unwinds thick steel strips (low carbon steel, high-strength steel, etc.), with a large load-bearing capacity to adapt to heavy raw materials for medium-to-large diameter pipes
Shearing and welding:A key efficiency unit for the ERW Tube Mill Line – it connects the end of the previous steel strip to the next, eliminating downtime and ensuring continuous production for the high-power welding section
Accumulator:Acts as a “material buffer” for the ERW Tube Mill Line – it stores steel strips temporarily, preventing the forming and welding sections from stopping during shearing/welding, and maintaining 20-80m/min stable speed
Forming, high-frequency welding, external burr removal, cooling, sizing, rough straightening:The core working section of the HG114 ERW Tube Mill Line – it uses heavy-duty forming rolls to shape thick steel strips into pipes, welds seams with 400KW high-frequency energy (ensuring strong, leak-proof welds for thick walls), removes burrs for smooth surfaces, cools to stabilize pipe structure, and sizes to meet φ40-φ114mm precision requirements
Flying sawing cutting:A high-precision, heavy-duty unit of the ERW Tube Mill Line – it cuts thick-walled finished pipes into 4-12m lengths (customizable) at high speed, without deformation, matching the line’s heavy-duty production rhythm
Roller after sawing
Inspection and collection
Packing
Weighing
Marking
Storage
| Item name | Technical Parameters |
| Raw material | Low carbon steel, low alloy steel, galvanized steel strip, high strength steel, etc. |
| Total power | About 630KVA |
| High frequency welding machine | 400KW |
| Roll weight | ≤8T |
| Round tube | φ40～φ114mm，Tube thickness:1.5～5.0mm |
| Square tube | 30X30～90X90mm，Tube thickness: 1.5～4.5mm |
| Rectangular tube | 20x40～80x100mm，Tube thickness:1.5～4.5mm |
| Tube mill speed | 20～80m/min |
| Tube length | 4-12m |
| Recommended plant dimension | 100m×18m×6m (≥6m; Distance from overhead crane track to ground) (Customized design can be made according to the customer's workshop） |
Why Choose HG114 ERW Tube Mill Line? Parameter Advantages Explained
Heavy-duty material compatibility: Supports low carbon steel, low alloy steel, galvanized steel, and high-strength steel – the ERW Tube Mill Line adapts to thick, heavy raw materials for medium-to-large diameter pipes, no need to invest in separate equipment for different heavy-duty materials.
High power & stable performance: 400KW high-frequency welding machine + 630KVA total power – the ERW Tube Mill Line ensures strong welds for thick-walled pipes (1.5-5.0mm) and avoids power shortages during long-term heavy production.
Versatile heavy-duty production: Covers φ40-φ114mm round pipes, 30X30-90X90mm square pipes, and 20x40-80x100mm rectangular pipes – one ERW Tube Mill Line replaces 2-3 single-spec heavy-duty lines, saving workshop space and labor costs.
Customizable heavy-duty workshop fit: Adapts to 100m×18m×6m or customer-specific factory sizes (with overhead crane compatibility) – the ERW Tube Mill Line fits existing heavy-industry workshop layouts, avoiding expensive renovations for heavy equipment.
