I beam section steel has high tensile strength and toughness, good cold bending and welding properties in high-rise buildings, bridges and other steel structures, the cross-sectional dimensions, surface quality control is good , it is widely used in many fields vehicle manufacturing , ikole ti awọn afara nla, iṣelọpọ ẹrọ, ati awọn ohun ọgbin ile-iṣẹ miiran.