Baosteel Danxia Steel Weathering Steel for Photovoltaic Support Systems

Product Background

Deserts and Gobi regions, with their abundant sunlight resources, are ideal locations for large-scale photovoltaic power plants. However, harsh environments (strong wind and sand, high salinity, and large temperature swings) can accelerate the corrosion of conventional galvanized steel supports, shortening their lifespan by over 30%, increasing maintenance costs and operational risks.

 Core Technology
Danxia Steel (hot-rolled super-weathering steel), developed by Baosteel, utilizes a special alloy composition and rolling process to form a dense and stable protective rust layer on the steel surface, effectively preventing corrosive media from penetrating the substrate. Its core advantages include:

Active corrosion protection: The rust layer forms naturally, eliminating the need for additional coating and maintaining high corrosion resistance even after long-term exposure.

High strength and lightweight: With a thickness of only 1.5-1.8mm, it is 20% lighter than traditional materials and offers higher strength.

Maintenance-free design: Requires no frequent maintenance throughout its lifecycle, reducing the operational burden in remote areas.

Environmentally friendly and low-carbon: Reduces carbon emissions during production and transportation by 35%.

Application Performance

Weather Resistance: Validated in harsh environments such as the Xinjiang Tarim Oilfield, this material exhibits significantly superior corrosion resistance to wind, sand, and salt and alkali corrosion than ordinary steel.

Adaptability: Widely used in photovoltaic projects across diverse scenarios, including deserts, mountainous areas, and mining areas.

Technical Parameters 

Material Standard: Q355NH

Corrosion Rate: ≤0.01mm/year (measured in desert environments)

Tensile Strength: ≥490MPa

Applications

 Large-scale ground-mounted photovoltaic power plants, distributed photovoltaic projects, and agricultural photovoltaic hybrid facilities, among other applications requiring long-term weather-resistant support structures.