Features:
RT530×13 high-frequency longitudinal welded pipe production line is mainly used for the production of round pipe φ219~φ530mm, wall thickness 4.0~13.0mm, square tube 170×170 - 400×400mm, wall thickness 4-10mm, and rectangular tube 260×130 - 400×200mm, wall thickness 4-10mm.
It adopts high-frequency induction welding and straight seam welding. Its working principle: weld the edge of the pipe when heated in a magnetic field, and then compress the edge in automatic mode, and the pipe moves continuously along the production line.
This high-frequency welding pipe mill is specialized equipment to produce high frequency straight seam welded pipes for structural pipe and industrial pipe. Through optimization design, best materials choice, and accurately fabrication and rolls, the whole line can be reached high precision and high speed. Within suitable range of pipe diameter and wall thickness, pipe production speed can be adjusted.
Process Flow:
Coil strips → coil car → uncoiler → snubber roller → pinch roll and leveler → automatic shear and butt welder → horizontal spiral accumulator → side guide device → edge trimming device → scrap chopping device → ultrasonic testing unit (for plate) → feeding device → forming unit → high frequency welding unit → deburring device (inside and outside) → grinding unit → ultrasonic testing unit (for pipe) → intermediate frequency annealing for welding seam → air cooling → water cooling → sizing unit → straightening unit → CNC milling saw → roller conveyor → straightening machine → chamfering machine → hydrostatic test → (manual inspection → repair) → Measuring and weighing and label printing → auto stacking and packing (with weighing) → warehousing
Main machine structure:
| Item | Stands |
| Forming section | |
| Feeding and guiding device | 1 |
| Pinch and Feeding stand | 2 |
| Rotating horizontal roll stands | 2 |
| Open profiling area horizontal stand | 3 |
| Open profiling area rotating vertical roll stand | 4 |
| Closed profiling area forming stands with Quick change system | 3 |
| Welding section | |
| Guide roll stand | 1 |
| Squeeze roll stand | 1 |
| HF Welder 1200kW | 1 |
| Burr Scraping device | 1 |
| Grinding roll stand | 1 |
| Ultrasonic flaw detector | 1 |
| Welding Medium Frequency Annealing Equipment | 3 |
| Water cooling device | 1 |
| Sizing section | |
| Vertical roll stand | 2 |
| Universal stand with Quick change system | 5 |
| Straightening stand (turk’s heads) | 2 |
Technical Parameter:
| Raw material requirements | |
| Material thickness | 4.0～13.0mm (Q355); 4.0～11.0mm (X70) |
| Yield point | σs≤550MPa |
| Tensile strength | σb≤700Mpa |
| Coil width | 650~1660mm |
| Coil inner diameter | 610mm / 760mm |
| Coil outer diameter | 1600-2200mm |
| Coil weight | Max.35T |
| Output product scope | |
| Round pipe size | φ219～φ530mm |
| thickness | 4.0～13.0mm (Q355); 4.0～11.0mm (X70) |
| square tube | 170×170 - 400×400mm (4-10mm) |
| rectangular tube | 260×130 - 400×200mm (4-10mm) |
| Producing length | 12m |
| Cutting length precision | ±3mm |
| Machine consumption | |
| Power supply | 380V/50HZ (customized) |
| Control voltage | AC110V/50HZ |
| Gear oil | N460 |
| Hydraulic oil | L-HM46 |
| grease | Calcium base grease No. 2 |
| Power | Appro. 5500KW |
| High frequency power | 1200KW |
| CO₂ welder | 100KW |
| Line data | |
| Total line length | About 510m |
| Line speed | 10~35m/min |
NO 11, NANHAI RD (E) HAIAN NANTONG JIANGSU CHINA
+86-513-88902499
+86-513-88902466