Spiral Pipe Plants specialize in producing large-diameter welded pipes, essential for industries such as oil and gas transportation, water supply, and construction. These plants utilize advanced welding technologies and rigorous quality control systems to ensure high-quality and efficient production, meeting stringent industry standards.

Customer challenges addressed

  • Produces large-diameter welded pipes efficiently
  • Employs advanced SA-welding technologies
  • Ensures high structural integrity of pipes
  • Integrates rigorous quality control systems
  • Supports seamless operations with infrastructure solutions
  • Environmentally friendly and economically viable
  • Offers flexibility in diameter and wall thickness

Key features

2-stage welding process

The 2-stage welding process represents a comprehensive welding process separating forming from finish-welding, which has a direct impact on productivity and quality. Starting from hot-rolled coils, stage one features a 3-roll bending system that forms the input stock into spiral pipes, followed by continuous, high-speed tack-welding. Then the forming station produces an endless pipe strand, which is cut into conventional pipe lengths by a cut-off machine. Next in line, a conveyor system transports the tacked pipes to the submerged-arc welding (SAW) stand. There, they are finish-welded both internally and externally.