Sichuan-Tibet Railway 50,000 tons of Z35 seismic channel steel order, multi-product matrix helps "Century Project" construction
50,000 tons of Z35 anti-tear and seismic channel steel order will be used for tunnel support and bridge reinforcement projects of Sichuan-Tibet Railway. The yield strength of this batch of channel steel is ≥ 420MPa, and the dynamic load fatigue life exceeds 2 million times. It can resist the extreme environmental challenges of high-intensity seismic zone (peak ground motion acceleration 0.4g) and high ground stress (burial depth up to 2600 meters) on the Sichuan-Tibet Line . Baotou Steel Co., Ltd. supplies Q355D I-beam, Q420D angle steel and seamless steel pipe and other supporting profiles simultaneously, forming an engineering solution of "channel steel + all types of steel"
Z35-level tear resistance standard: A comprehensive upgrade from raw materials to processes.
For the first time, the Z35 grade tear resistance (lamellar tear rate ≤ 15%) was included in the mandatory procurement standard for the Sichuan-Tibet Railway Project. Baotou Steel's steel link adopts micro-alloying and second-phase synergistic strengthening technology, and through the Nb-V composite alloy composition design, the impact toughness of the channel steel (-40 ℃) ≥ 60J, which is 40% higher than that of traditional products. Its supporting precision round steel (20CrMnTi) production line has been upgraded synchronously, and the processing accuracy has reached ± 0.02mm. It is used in the manufacture of tunnel embedded parts, which helps to reduce the weight of the project by 25%. At present, Baotou Steel's steel link channel steel has passed SGS testing and European Union EPD certification, and the carbon footprint has been reduced to 1.8tCO ²/t
Supply Chain Collaboration in Extreme Geology: Guaranteeing the Whole Chain from Channel Steel to Seamless Steel Pipe
In response to challenges such as high ground temperature (rock temperature up to 86 ° C) and active fault zones along the Sichuan-Tibet Railway, Baotou Steel Co., Ltd. launched a combination plan of "high temperature resistant channel steel + seamless steel pipe": • Channel steel: surface coated with nano-ceramic heat-resistant coating, temperature resistance improved to 600 ° C; • Seamless steel pipe: 15CrMoG material, yield strength 460MPa, used in high-pressure water injection system, equipment life extended by 30%; • I-beam: Q355B hot-rolled I-beam through TMCP process optimization, grain size up to ASTM 8, support the design of column-free station building in Ya'an section
Regional market breakthrough: "Belt and Road Initiative" orders account for more than 60%
Relying on the Sichuan-Tibet railway project, we will accelerate the expansion of the South East Asia and Middle East markets. Its weathering channel steel (09CuPCrNi) has been used in the Dasu Hydropower Station in Pakistan, and the H-shaped steel exported to the Central Asia natural gas pipeline project accounts for 30%. In the first quarter of 2025, the company's total steel exports reached 480,000 tons, of which the "Belt and Road Initiative" country orders accounted for 65%, an increase of 12 percentage points from 2024
Green smart manufacturing: Zero carbon electric arc furnace technology empowers industrial upgrading
The zero-carbon electric arc furnace production line has been put into operation, using hydrogen-based reduction and AI temperature control technology to achieve near-zero emissions in the channel steel smelting process. This technology is simultaneously applied to Q460D I-beam, API 5L X70 seamless steel pipe and other products, reducing carbon emissions by 65% compared with traditional processes. The company plans to increase the proportion of green steel exports to 50% in 2026, with the goal of covering European Union and South East Asia carbon neutrality infrastructure projects
Future layout: blockchain traceability and intelligent warehousing dual drivers
Launch the blockchain traceability system for the whole life cycle of steel. Customers can obtain the carbon footprint, quality inspection report and processing record of products such as channel steel and I-beam by scanning the code. The synchronously constructed intelligent warehousing center will realize 48-hour direct delivery in Beijing-Tianjin-Hebei and Chengdu-Chongqing regions and support the subsequent demand for 150,000 tons of steel for the Sichuan-Tibet Railway. The general manager said: "We will take seismic channel steel as the entry point, deepen the 'rare earth steel + high-end profiles' strategy and create a world-class benchmark for the engineering steel supply chain."
