With July’s sweltering heat bearing down and temperatures soaring across the Jianghuai region, the construction site of the Su-Wan-Yu Trunk Pipeline Project (Binhai–Lushan) – General Contracting Lot 1 is pushing forward at full throttle. Undertaken by China Petroleum (Xinjiang) Engineering Co., Ltd., this state-key energy infrastructure project is maintaining a coordinated, multi-process rhythm despite the oppressive summer conditions.

As of July 15, Lot 1 had achieved the following cumulative milestones:

Right-of-way clearing: 139.273 km

Right-of-way grading (skipping): 113.214 km

Pipeline welding: 70.241 km

Field joint coating: 35.766 km

All construction sequences are progressing steadily and on schedule.

Welding – The Critical Core

Welding remains the linchpin of long-distance pipeline construction, as the quality of each girth weld directly determines the long-term operational safety of the entire line. The welding equipment deployed on this lot is the Xionggu automatic welding system.

Since the onset of summer, the Jiangsu section of the route has seen consecutive daytime highs exceeding 35°C. Inside the mobile on-site windproof welding shelters, the confined, cramped spaces turn into giant steam chambers. The steel pipe walls, baked under the blazing sun, become almost scalding to the touch—and with the intense arc heat generated by the welding torches, temperatures inside the shelters far outstrip those outside.

Yet amid this extreme heat, the Xionggu automatic welders have demonstrated exceptional performance, running reliably and stably—enduring the same grueling conditions as the welders themselves.

Decades of Expertise, Built for Extremes

With 34 years of dedicated R&D in pipeline welding, Xionggu operates an 80,000 m² specialized manufacturing and innovation base. Its core technological pillars—precise arc droplet control, intelligent seam tracking, and adaptive welding parameter programming—form the backbone of the equipment’s rugged reliability. This deep technical foundation has been the bedrock of the system’s unwavering performance throughout this high-temperature campaign.

Heat Never Stops, Sparks Never Die

Behind the 70-kilometer welding milestone lies not only the Xionggu automatic welding system’s steadfast operation under extreme conditions, but also the grit, responsibility, and professionalism of the constructors who brave the blistering heat day after day—writing their commitment into every inch of steel on this vital national energy artery.