28mm Thick Wall, 40m Ultra-Long Spiral Pipe | 3620 Spiral Pipe Mill in Zhejiang,china
14 Mar,2026
The 3620 spiral welded pipe unit at the Zhejiang customer’s site is running stably. The production specifications for this batch are: Thick-walled spiral steel pipe with a diameter of Φ3200 mm, a wall thickness of 28 mm, made of Q355 material, and a single length of 40 meters. Large-caliber components with thick walls pose a significant challenge to the equipment’s forming capabilities, welding stability, and overall line compatibility.
Machine Specifications:
Material: Q235, Q355
Steel coil width: 1000–2000 mm
Steel pipe diameter: Φ630–Φ3620 mm
Steel pipe thickness: 10–32 mm
Unit Type: Forward‑swing, Center‑positioned
On-site video:
During the production process, the unit operates smoothly throughout the entire sequence—from unwinding and forming to welding—achieving excellent roundness in the formed parts and consistent weld quality, fully demonstrating the capabilities of the 3620 unit in… Strong capabilities in the production of large-diameter, thick-walled pipes Especially 28mm thick-walled specification It places higher demands on welding power, forming accuracy, and equipment rigidity—yet this unit is still able to maintain efficient and stable production.
This production 40-meter ultra-long spiral steel pipe It holds significant application value in water conveyance projects, energy pipelines, and large-scale infrastructure initiatives. Stable equipment performance not only ensures product quality but also provides reliable support for customers’ mass production operations.
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