China Structural Steel Shapes Factory Direct with Quality Assurance

With over a decade of deep experience in the photovoltaic (PV) mounting industry, Yizhao supplies mild steel rectangular hollow sections—available from stock—to metal profile buyers worldwide. These rectangular tubes are cold-formed from low-carbon steel (such as Q235B grade) and offer superior resistance to bending and torsion compared to round tubes or angle steel of the same dimensions. They are widely used in engineering applications as vertical columns, diagonal braces, crossbeams, and various types of load-bearing structural frameworks.

Yizhao possesses a decade of experience in exporting photovoltaic (PV) mounting systems and specializes in producing ZAM steel for solar mounting specifically for these structures. This product is a finished steel component with a pre-applied ZAM coating; it requires no further anti-corrosion treatment upon arrival at the factory and can be fed directly into cold-forming production lines. The finished components are primarily assembled using bolts and clamps, minimizing on-site welding to ensure the protective coating remains intact.

In coastal, saline-alkali, or high-humidity environments, standard galvanized mounting structures often develop red rust within just a few years. Yizhao—a manufacturer of ZAM steel for solar mounting systems—was founded specifically to address this pain point. Our ZAM steel features self-healing properties at cut edges and offers several times the corrosion resistance of conventional hot-dip galvanized steel, helping to extend the lifespan of your power plant to over 25 years.

Tianjin Yizhao Company operates four manufacturing plants and specializes in hollow structural section HSS. Its products consist of integrally formed, closed-section structural steel available in square, rectangular, and circular profiles. These components offer high load-bearing capacity, torsional resistance, and material efficiency, making them ideal for large-span industrial facilities, high-rise steel structures, photovoltaic mounting systems, and heavy-duty frameworks.