The Dalipal project aligns with the “Made in China 2025” initiative and the national “dual-carbon” goals, serving as a tangible step in accelerating the replacement of old growth drivers with new ones. CERI, committed to national strategic priorities and its mission as the “national team for world-class metallurgical construction”, has partnered with Dalipal to set a benchmark for coordinated development among policy, industry, and enterprise. The newly designed production line is capable of manufacturing seamless steel pipes with an outer diameter of Φ32.0–Φ114.3 mm, wall thickness of 3.0–16 mm, and lengths of 6.0–24 m, supporting an annual capacity of approximately 200,000 tons. It encompasses the entire manufacturing process from hot rolling to finishing, establishing a comprehensive industrial chain for high-end oil pipes. The line delivers premium steel pipe products designed to meet the demanding requirements of extreme conditions, such as deep-sea, ultra-deep well, and shale gas exploration, for both domestic and international markets.

Innovation-Driven: Breaking Technical Barriers The Dalipal project introduces several domestic firsts, including online straightness detection for steel pipes, automated loading and shipping in the intelligent warehouse, intelligent pipe threading technology, and an advanced straightening model—closing critical technical gaps in China. The hot-rolled pipe production line features cutting-edge equipment such as a conical roll piercing mill, a three-roll adjustable retained mandrel mill, and a three-roll stretch-reducing mill. Alongside the intelligent 3D intermediate finished product storage yard, continuous heat treatment line, oil pipe threading line, pipeline pipe processing line, multifunctional finishing line for steel pipes, oil pipe thickening line, and offline packaging line, these components form a comprehensive seamless steel pipe production system.

Conical Roll Piercing Mill

Three-roll Adjustable Retained Mandrel Mill

Three-roll Stretch-reducing Mill

Intelligent Manufacturing Empowerment: Redefining the Production Paradigm The project leverages a “software-defined intelligent factory system platform” to establish an integrated intelligent manufacturing system spanning the entire production process. A comprehensive material tracking system ensures full traceability of product quality. Nine types of intelligent detection equipment are deployed to accurately identify defects, guaranteeing industry-leading product quality. Over 40 six-axis robots have been implemented to fully automate simple and repetitive tasks, replacing manual labor and enabling unmanned operations. Utilizing digital twin technology, the production line is mapped in real time, allowing dynamic adjustment of process parameters and one-click remote equipment control from a centralized control center. The adoption of an intelligent turnover warehouse and a centralized crane control system enables fully automated scheduling of warehousing and shipping, reducing material turnover time, lowering inventory costs, and significantly enhancing logistics efficiency.

Centralized Control Center

Green-First: Pioneering a New Ecological Vision CERI is committed to advancing green and low-carbon development by innovatively applying environmental technologies. The introduction of a full-oxygen combustion system in the ring furnace significantly reduces fuel consumption and nitrogen oxide emissions. The UV scraping and coating process used for steel pipe anti-corrosion eliminates volatile organic compound (VOC) emissions at the source, achieving zero emissions. Additionally, potential energy recovery technology applied to the intelligent warehouse stacker effectively lowers equipment energy consumption. Together, these technologies enable Dalipal to achieve green production aligned with the national “dual-carbon” strategy, offering a replicable and scalable “CERI solution” for the industry’s green transformation.

Ring Furnace

Sincere Collaboration: Management Empowerment Unites Teams Facing challenges of a large-scale project, tight schedule, and complex cross-operations, the project team demonstrated unwavering determination with an enterprising spirit, treating the project as a decisive battle. The design team worked tirelessly between drawings and the construction site to resolve threading line layout issues. Despite severe cold reaching minus 15°C, the construction team completed steel structure installation 45 days ahead of schedule, achieving a winter construction milestone with foundation pouring on January 8. The procurement team established a resilient supply chain, employing standardized processes, early technical procurement, and digital monitoring to reduce the manufacturing cycle of initial equipment by 50%. Over 300 sets of equipment arrived on-site an average of two months early. An innovative “grid + information” dual-control model was introduced for safety management, turning the commitment to zero accidents into a firm onsite guarantee for work safety.

Pipe Production Line

Full-Industrial-Chain Layout: Establishing New Global Competitive Advantages Once operational, the project will strengthen Dalipal’s closed-loop ecosystem of raw materials, production, sales, and recycling, advance the alignment of China’s oil pipe equipment standards with international benchmarks, and bolster energy cooperation under the Belt and Road Initiative. Leveraging this project as a cornerstone, CERI is accelerating its transformation into a comprehensive provider of intelligent manufacturing solutions for high-end equipment, driving industry innovation and supporting the national strategy to build a manufacturing powerhouse.

Project Panorama