Blog


Adhering to thirty years of professional accumulation, focusing on the research and development, design, manufacturing and sales of welded pipe equipment

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.

Key words:

Related News


Maximizing Efficiency with Pipe Roller Machines for Welding

In the realm of manufacturing and machining, particularly in industries involving welding, the utilization of a pipe roller machine can streamline operations and enhance overall efficiency. A pipe roller machine is an indispensable tool designed to support and stabilize pipes during the welding process. By securing the pipe in place, these machines allow for more precise welding and reduce the ris

2026-04-30

Steel Pipe End Expander Technology Enhances Efficiency in Modern Pipe Manufacturing Industry

As global industrial construction and pipeline engineering projects continue to expand, the demand for advanced pipe processing equipment is increasing rapidly. Among the essential machines used in steel pipe manufacturing, the Steel pipe end expander has become an important solution for improving pipe connection quality, dimensional accuracy, and production efficiency. With the continuous development of modern manufacturing technology, this equipment is playing a critical role in pipeline production and infrastructure construction worldwide.

2026-04-23

Spiral welded pipe unit | steel pipe flat head chamfering machine | steel pipe hydraulic testing machine | steel pipe end expanding machine | large diameter longitudinal welded pipe machine | auxiliary equipment for steel pipe transfer finishing area

Product inquiry

* Please leave your contact information and we will contact you within 24 hours.