Recently, at the project’s production site, with equipment running smoothly and steel pipes successfully formed, the spiral welded pipe unit manufactured by Taiyuan Huaye Heavy Industry has successfully produced DN3460×30mm ultra-large-diameter, extra-thick-walled spiral welded pipes. The on-site technical service team, together with the customer, witnessed this significant milestone and posed for a commemorative photo holding a banner that read “DN3460×30mm Spiral Welded Pipe Successfully Rolled Off the Line,” marking another important achievement in the project’s construction process.

The spiral welded pipe successfully rolled off the production line this time reaches a nominal diameter of DN3460 and a wall thickness of 30 mm. For spiral welded pipe manufacturing, the combination of large diameter and ultra‑thick wall imposes extremely stringent requirements on equipment design capabilities, forming accuracy, welding processes, and overall line stability. In particular, the continuous forming and high‑quality welding of 30‑mm‑thick steel plates not only test the equipment’s overall rigidity and load‑carrying capacity but also challenge the production line’s comprehensive performance in coil‑feeding, forming control, internal and external welding, and automated coordinated operation.

Device Parameters:

Material: Q235, Q355

Steel coil width: 1000–2000 mm 
Steel pipe diameter: Φ630–Φ3620 mm 
Steel pipe thickness: 10–32 mm 
Cabin configuration: forward-swinging, center-mounted

As a leading domestic manufacturer of large‑scale spiral welded pipe equipment, Taiyuan Huaye Heavy Industry has consistently focused on the research, development, and production of large‑diameter, thick‑walled, and high‑end spiral welded pipe lines. Over the years, the company has amassed extensive experience in ultra‑large‑diameter projects and continues to achieve breakthroughs in the design and manufacture of high‑specification, high‑strength, high‑value‑added steel pipe equipment. The successful production of this DN3460×30mm ultra‑thick‑walled spiral welded pipe once again underscores Huaye’s technological strengths and reliable performance in large‑scale, heavy‑load, and high‑precision manufacturing.

Going forward, Taiyuan Huaye Heavy Industry will remain committed to technological innovation, continuously enhancing its R&D and manufacturing capabilities in large‑diameter spiral welded pipe equipment. The company will deliver more efficient, reliable, and intelligent steel pipe production solutions to customers worldwide, helping to ensure the successful implementation of an increasing number of high‑end steel pipe projects.