Donghong Co., Ltd.'s φ2032mm*25.2mm*16m spiral welded steel pipe officially rolled off the production line and achieved large-scale mass production. This achievement not only set a new record for the diameter and length of spiral welded pipes at home and abroad, but also made Donghong Co., Ltd. the first company in the world to have the production capacity of high-grade, ultra-large diameter, and ultra-long fixed-length spiral welded pipes, providing important support for the upgrading of my country's pipeline manufacturing industry.

The mass-produced spiral welded pipes adopt the industry-leading pre-finishing process. The spiral forming process can be independently optimized, and the geometric dimensional accuracy, product quality and production efficiency of the steel pipe are significantly improved through intelligent welding equipment.

Data shows that the dimensional tolerance control of steel pipes under the new process has reached the top level in the industry, promoting the comprehensive digital transformation of spiral welded pipes, and presenting 4 core advantages:

1. Pre-finishing intelligent sequencing: The use of industrial Internet of Things technology to realize the dynamic scheduling of pre-finishing processes, greatly shorten the production change time, and improve equipment utilization.

2. High-precision adaptive welding: laser vision guidance, current/voltage/speed adaptive linkage adjustment, and a significant increase in the first welding pass rate.

3. Full-link automation integration: unmanned loading-forming-welding-sizing-cutting-detection, leading the industry into a new era of intelligent manufacturing.

4. Multi-dimensional quality control system: online detection of X-ray + ultrasonic + process sampling and other multi-dimensional quality control, all-round guarantee of product quality, and provide customers with a wider range of high-quality services.

As a leading enterprise in the domestic engineering composite pipeline industry, Donghong Co., Ltd. has continuously refreshed industry records with its continuously expanding "intelligent manufacturing matrix", demonstrating strong technical strength and innovation capabilities.