The flange of H-shaped steel is parallel or nearly parallel on the inside and outside, and the end of the flange is at a right Angle, so it is named parallel flange I-steel.
The thickness of the web of H-shaped steel is smaller than that of ordinary I-beams with the same height of the web, and the width of the flange is larger than that of ordinary I-beams with the same height of the web, so it is also named wide-rim I-beams. Determined by the shape, the section modulus, moment of inertia and corresponding strength of H-beam are obviously better than that of ordinary I-beam with the same single weight.
Used in different requirements of the metal structure, whether it is under bending torque, pressure load, eccentric load show its superior performance, can greatly improve the bearing capacity than ordinary I-steel, saving metal 10% ~ 40%.
H-shaped steel has wide flange, thin web, many specifications, and flexible use, which can save 15% to 20% of metal in various truss structures. Because its flange is parallel inside and outside, and the edge end is at a right Angle, it is easy to assemble and combine into various components, which can save about 25% of the welding and riveting workload, and can greatly accelerate the construction speed of the project and shorten the construction period.