Hot Rolled Section Steel H Beams SM490
SM490 H-beams are produced by hot rolling process with dimensional tolerances in accordance with JIS G 3192 standard.
Key steps include
Material preparation: Iron ore, scrap steel and alloys are melted in a blast furnace.
Hot rolling: Molten steel is formed into H-beams under controlled temperature and pressure.
Heat treatment: Normalizing or tempering is used to optimize mechanical properties and eliminate residual stresses.