Jinxinai low-temperature H-beams made their successful debut in the Jiangsu Binhai (LNG) project

The total investment in the Jiangsu Binhai LNG project is 7,025,480,000 yuan. The main construction components include 4 LNG storage tanks with a capacity of 220,000 cubic meters each, 1 LNG loading/unloading berth capable of handling vessels with a capacity of 80,000 to 266,000 cubic meters, as well as various supporting facilities for loading/unloading, gasification, and transportation. The capacity of the LNG storage tanks constructed as part of this project is the largest in China to date.

LNG storage tanks are typically pressurized cryogenic storage tanks that reduce the temperature of natural gas below its boiling point (-160°C) in order to store it at low pressure and low temperature. Therefore, this requires steel profile products to have good low-temperature resistance. After the project issued its tender announcement, Jinxi Group promptly formed a marketing team and went to the project owner’s site to conduct in-depth discussions. This effort was highly valued by the project owner, who sent a team to conduct an on-site inspection. “The Jinxī steel profile production line is world-class, offers a wide range of product specifications, produces goods in strict accordance with standards, and provides high-quality service – all of which meet our requirements. ”The project team believes that Jinxī Group’s low-temperature resistant H-shaped steel can withstand an impact energy of -20 degrees Celsius, fully meeting the requirements for project construction. Ultimately, after a series of discussions and negotiations, Jinxi Group stood out among numerous domestic and international steel companies thanks to its advanced technology, high-quality products, and excellent service, and became the supplier of H-beam products for this project.

MaSteel’s low-temperature resistant H-beams \"Meili Dongren\" head to the Arctic by Xu Tao, Zhang Lei, Wei Jun, MaSteel Home, November 13, 2014. The image shows technicians carefully checking the surface quality of the H-beams. 　　Magang H-beams make their debut in the Russian market! On November 12, reporters learned from the Sansteel Rolling Plant that by the end of October, the first batch of 21 low-temperature resistant H-shaped steel products meeting Russian standards for the Russian construction project had been successfully manufactured. After two on-site inspections by the project owner, all performance parameters met the required standards, and these products are now set to be shipped across the ocean to the Arctic region of Russia. 　　Zhang Weibin, head of the Technical Quality Department at Sansteel Rolling Plant, told reporters: “This project is one of the construction projects for Russia’s liquefied natural gas export facilities. It is located in northern Siberia, in the Arctic sub-region, where permafrost is widespread; construction can only take place for 3 months each year. The requirements regarding the properties of H-shaped steel and the delivery deadlines are very strict.” There are numerous product specifications, making it difficult to assemble them; furthermore, all products must pass strict Russian certification and undergo 100% inspection during on-site audits before they can be released for sale. ” 　　Difficulties reveal true strength. In recent years, Magang has accelerated its efforts in research and development of H-beam products and improved its integrated R&D, production, and sales service system. Thanks to its advanced technology, superior quality, and excellent service, it has established a strong brand reputation both in China and around the world. Thanks to its clear advantages and well-known brand, MaSteel stood out among numerous steel manufacturers in the tender for H-beam supplies for a project in Russia, and was selected as the designated supplier for those H-beams, achieving significant benefits as a result. The brand must not lose its appeal, and orders must be fulfilled. Magang pools its best resources, integrates research, production, and sales, and maintains close cooperation to ensure the smooth progress of product design, production, testing, and delivery. The sales company tracks orders throughout the entire process, providing personalized service to meet customer needs. The technology center got involved early to understand the product’s manufacturing process and quality requirements, thereby initiating product development and certification ahead of competitors. To complete this order, which represents the highest requirements in rolling technology and the greatest challenges in production planning to date, Sansteel’s Rolling Plant continuously optimized the process design and overcame numerous technical difficulties ； Scientific and efficient production organization to ensure timely delivery of products. Among them, the Russian-standard light-weight thin-walled H-beams developed independently by Magang have small dimensions, making production control challenging; they set a record for the smallest size of products produced on the H-beam manufacturing line to date. Not only do their various performance indicators meet Russian standards, but their impact strength at temperatures as low as -50°C far exceeds the requirements of the clients, which has won great admiration from the Russians. 　　It is understood that the production of the second batch of Russian-standard low-temperature resistant H-beams has already begun. MAGANG will further improve its R&D, production, and sales service system to fully meet customer needs and make its H-beam brand well-known in the international market. (Magang Daily: Xu Tao, Zhang Lei, Wei Jun; Photography: Zhang Mingwei)

“A evaluation meeting for the scientific and technological achievements related to \"Research and Application of Key Manufacturing Technologies for Low-Temperature Resistant Hot-Rolled H-Beams\" was held in Ma’anshan City. Chinese Society for Metals, 2018-01-18. On January 9, 2018, the Chinese Society for Metals organized experts to conduct an evaluation of these scientific and technological achievements in Ma’anshan City, focusing on the research and development work carried out by MaSteel (Group) Holding Co., Ltd., Ma’anshan Iron and Steel Co., Ltd., and Anhui University of Technology. Domestic production of hot-rolled H-beams has a long history, but H-beams for structural use in cold regions, which require special properties in terms of low-temperature toughness and weldability, have not been manufactured domestically; they are still mainly produced by companies such as ArcelorMittal, Nippon Steel, and JFE. The main problems include: ① Due to insufficient research on relevant strengthening mechanisms, there are technical bottlenecks in the production of hot-rolled H-beams with high and low temperature toughness. ②The use of economical hypoeutectoid steel along with a composition design incorporating elements such as Nb, V, and Ti to improve low-temperature toughness results in high crack sensitivity of the billets and a high incidence of surface cracks. The defect-free billet continuous casting technology is one of the key technical bottlenecks in the development of hot-rolled H-beams with high and low temperature toughness. ③Due to the complex cross-section of H-shaped steel, significant differences in temperature and deformation occur in areas such as the web, flanges, and R-angles during rolling, resulting in non-uniform microstructure and properties. The design of microalloyed high-strength steels, which require high low-temperature toughness, exacerbates this uneven trend. ④There are many specifications for H-shaped steel; the dimensions of products range from thin-walled to thick-walled, and issues related to temperature, deformation, as well as the uniformity and stability of properties are particularly prominent. This phenomenon is particularly evident in thick-flange H-beams with a thickness of 40–50 mm, where the issue of deformation and penetration is even more severe; hot-rolled H-beam products of this thick-flange type are still unavailable in the domestic market. Given that the Arctic region is a frigid area, the steels used in oil and gas infrastructure there must meet stringent requirements such as high strength, excellent low-temperature impact toughness, and good weldability at temperatures as low as -50°C. Through collaboration among companies such as MaSteel (Group) Holding Co., Ltd., Ma’anshan Iron and Steel Co., Ltd., and Anhui University of Technology, new progress has been made in the research and application of key manufacturing technologies for low-temperature resistant hot-rolled H-beams.

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YB∕T 4619-2017 Low-temperature resistant hot-rolled H-beams