Main Features & Advantages
High-Frequency Welding Stability: Consistent weld seam formation, minimal defects, strong mechanical properties.
Automated Control & Monitoring: PLC + HMI for parameter adjustment, real-time monitoring, auto fault diagnosis.
Quick Roll Change System: Efficient roll change design reduces downtime and increases output.
Energy Optimization: Optimized electrical circuits and efficient components help lower energy usage.
Flexible Product Range: Supports straight seam welded pipes with different diameters, wall thicknesses, and optionally different cross-sections.
Robust Construction: Heavy-duty frame and precision alignment ensure long-term stability under heavy operation.
FAQ – Frequently Asked Questions
Q:What diameter and wall thickness can HG127 line handle?
A:The standard range is OD 108–127 mm and wall thickness 2.5–8.0 mm, but we can customize for special requirements.
Q:How does a welded pipe production line differ from a seamless or SAW line?
A:A welded pipe line (ERW / high-frequency) uses edge-to-edge welding, suitable for small and medium diameters. SAW or submerged arc lines are for larger diameters and different welding methods.
Q:Do you provide installation, commissioning, and training?
A:Yes. We offer turnkey services worldwide: installation, commissioning, operator training, and after-sales support.
Q:What is the warranty and maintenance policy?
A:We offer standard warranty periods (e.g. 12 months) and spare parts support. Preventive maintenance training is part of our contract.
Uncoiler:The starting unit of the HG127 Welded Pipe Production Line – it features a heavy-duty structure to stably unwind thick, wide steel strips (for large-diameter pipes), ensuring continuous material supply without deformation
Shearing and welding:A key efficiency unit for the Welded Pipe Production Line – it uses high-strength welding technology to connect steel strip ends, avoiding downtime and maintaining stable production for large-diameter pipe raw materials
Accumulator:Acts as a “material buffer” for the Welded Pipe Production Line – it stores wide steel strips temporarily, preventing the forming and welding sections from stopping during shearing/welding, and keeping the 20-75m/min speed consistent
Forming, high-frequency welding, external burr removal, cooling, sizing, rough straightening:The core working section of the HG127 Welded Pipe Production Line – it uses large-caliber forming rolls to shape steel strips into φ50-φ127mm pipes, welds seams with 500KW high-frequency energy (ensuring leak-proof, high-strength welds for thick walls), removes burrs to meet large-diameter pipe surface standards, cools to stabilize pipe structure, and sizes to control diameter precision within ±0.5mm.
Flying sawing cutting:A high-precision unit of the Welded Pipe Production Line – it uses a heavy-duty saw blade to cut large-diameter, thick-walled pipes into 4-12m lengths (customizable) without deformation, matching the line’s large-scale 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 800KVA |
| High frequency welding machine | 500KW |
| Roll weight | ≤8T |
| Round tube | Φ50～φ127mm，Tube thickness:1.50～5.5mm |
| Square tube | 40X40～100X 100mm，Tube thickness: 1.5～5.0mm |
| Rectangular tube | 30x50～80x120mm，Tube thickness:1.5～5.0mm |
| Tube mill speed | 20～75m/min |
| Tube length | 4-12m |
| Recommended plant dimension | 110m×18m×6m (≥6m; Distance from overhead crane track to ground) (Customized design can be made according to the customer's workshop） |
Why Choose HG127 Welded Pipe Production Line? Parameter Advantages for Large-Diameter Pipes
Wide material adaptability for large pipes: Supports low carbon steel, low alloy steel, and high-strength steel – the Welded Pipe Production Line handles thick, wide steel strips required for φ50-φ127mm pipes, no need for separate equipment for different large-diameter raw materials.
High power ensures stable welding: 500KW high-frequency welding machine + 800KVA total power – the Welded Pipe Production Line provides sufficient energy for thick-walled large-diameter pipes, avoiding weak welds and ensuring product qualification rate ≥99%.
Versatile large-diameter production: Covers φ50-φ127mm round pipes, 40X40-100X100mm square pipes, and 30x50-80x120mm rectangular pipes – one Welded Pipe Production Line replaces 3-4 single-spec large-diameter lines, saving workshop space and labor costs.
Customizable for large workshops: Adapts to 110m×18m×6m or customer-specific factory sizes (with overhead crane compatibility) – the Welded Pipe Production Line fits large-scale industrial workshop layouts, avoiding expensive expansions for large equipment.
