Hot sell Q235 Q355 steel beam I-Beams for Steel Structure

I-beams, also known as steel beams, steel I-bars, and general-purpose beams, are commonly used for building structural support, especially in steel structure buildings. I-beams have a wide range of sizes to choose from and support customization.

The dimensions of I-beams are marked in accordance with the national standard (GB/T 706-2016) as "height (h) x leg width (b) x waist thickness (d)" (unit: mm), and are divided into ordinary I-beams (code "I", widely used) and lightweight I-beams (emphasizing lightweight). Ordinary I-beam waist height covers 100-630mm, commonly seen in I10 (100 × 68 × 4.5), I20a (200 × 100 × 7.0), I20b (200 × 102 × 9.0), I40A (400 × 142 × 10.5), etc. Some models come with "a/b/c" subtypes (slightly different waist thickness and leg width, with increased load-bearing capacity), suitable for heavy-duty scenarios such as building load-bearing and mechanical racks; The waist height of lightweight I-beams is mostly 50-200mm (such as Q10: 100 × 68 × 4.0), with narrow legs and thin waist, making them more lightweight and suitable for temporary construction, agricultural machinery, and other scenarios. The selection should be matched with the load, material (Q235/Q355, etc.), and installation requirements.