Wide and parallel flanges: The flanges of H-shaped steel are relatively wide, and the inner and outer sides are parallel or nearly parallel. The ends of the flanges are at right angles. This makes it have good bending resistance in all directions and a large lateral stiffness, effectively resisting wind loads and seismic actions.

Thin web: Compared with ordinary I-beams of the same web height, the web thickness of H-beams is smaller. This ensures structural strength while reducing their own weight and saving steel usage.

A wide range of specifications: The product specifications of H-shaped steel are rich. There are multiple combinations of dimensions such as web height, flange width, web thickness and flange thickness, which can meet the needs of different projects.

Classification

According to the flange width, H-beams can be classified into wide flange (HW), medium flange (HM) and narrow flange (HN) H-beams. The flange width B of wide flange and medium flange H-beams is greater than or equal to the web height H, while the flange width B of narrow flange H-beams is approximately half of the web height H.

By product application: It is classified into H-shaped steel beams, H-shaped steel columns, H-shaped steel piles, extremely thick flange H-shaped steel beams, etc. Generally, narrow-flange H-beams are used as beam materials and wide-flange H-beams as column materials.

According to the production method, it is divided into welded H-beams and rolled H-beams. Rolled H-beams are further classified into hot-rolled H-beams and cold-rolled H-beams, among which hot-rolled H-beams are more widely used.

According to the size and specification, H-beams are classified into large, medium and small sizes. Products with a web height H of over 700mm are generally referred to as large sizes, those with a height H of 300-700mm as medium sizes, and those with a height h of less than 300mm as small sizes.

Production method

Rolling: In modern steel rolling production, universal rolling mills are used to roll H-beams. The web of H-shaped steel is rolled between the upper and lower horizontal rolls, while the flanges are simultaneously formed between the side of the horizontal rolls and the vertical rolls. By controlling the reduction amount, the billet is rolled into products of the required specifications, shapes and sizes.

Welding: Cut the steel strip of appropriate thickness to the appropriate width, and then weld the flange and web together on a continuous welding machine. However, welded H-shaped steel has disadvantages such as high metal consumption, difficulty in ensuring uniform product performance, and restrictions on size and specifications.

Performance advantage

Good mechanical properties: The section modulus, moment of inertia and corresponding strength of H-shaped steel are significantly superior to those of ordinary I-beams of the same single weight. When subjected to bending moments, pressure loads and eccentric loads, it can greatly enhance the load-bearing capacity and save 10% to 40% of metal.

Convenient construction: As the inner and outer sides of the flange are parallel and the flange ends are at right angles, it is easy to assemble and combine into various components, which can save about 25% of the welding and riveting workload, greatly accelerating the construction speed of the project and shortening the construction period.

High economic efficiency: Compared with reinforced concrete structures, H-shaped steel structure buildings can reduce the volume of foundation engineering, decrease the amount of concrete used, and save costs. Meanwhile, due to its light weight, it can reduce transportation and installation costs, and when it is dismantled later, the recycling value of scrap steel is high.

Good environmental performance: Compared with concrete structures, dry construction can be adopted, generating less noise and dust. The amount of soil taken for foundation construction is small, causing less damage to land resources and being conducive to the protection of the ecological environment.

Application field

Construction field: Widely used in beams and columns of civil building steel structures, such as various residences, office buildings, shopping malls, etc. Load-bearing supports, pipe supports, transport bridge supports, mine supports, etc. for industrial building steel structures.

Bridge engineering: It is used for large-span steel bridge components, capable of withstanding significant loads and deformations, ensuring the stability and safety of the bridge.

Mechanical manufacturing: It can be used as various machine components, such as the bridge frame of cranes and the support frame of gantry cranes, providing reliable support structures for mechanical equipment.

Electric power engineering: H-shaped steel is often used for equipment supports in industries such as petroleum, chemical engineering, and power to meet the load-bearing and stability requirements of the equipment.

In water conservancy projects: In foundation treatment and embankment engineering, H-shaped steel can be used to reinforce the foundation and enhance the anti-skid and anti-overturning capacity of the embankment.