Ultra-Large 4220 Spiral Pipe Mill Completes Commissioning and Begins Pipe Production

The Jiangsu ultra-large-diameter 4220 spiral welded pipe mill has successfully completed commissioning and is now producing pipes. This machine employs a front-swing intermittent production method and represents a fully integrated, automated system combining mechanical, electrical, and hydraulic controls. It is capable of manufacturing extra-large-diameter, high-precision spiral welded pipes—products that find extensive applications in critical sectors such as oil and gas transportation, urban pipeline networks, and bridge construction. The successful deployment of this advanced equipment holds significant importance for enhancing the safety and durability of the nation's vital infrastructure.

Equipment Specifications:

Plate width: 1000–2000 mm 
Pipe diameter: Φ820 – Φ4220 mm 
Wall thickness: 8 – 28 mm 
Pipe length: 6–13 m