Product Description
Profile Steel
H-section steel is an efficient structural steel profile with an H-shaped cross-section designed to provide a favorable strength-to-weight ratio. Its wide flanges and vertical web provide high resistance to bending and compression, making H-sections suitable for columns, beams, frames, bridges, industrial buildings, and other load-bearing structures. Depending on the project requirements, H-section steel can be supplied in different steel grades, sizes, and surface conditions.
SS490 and Q275A are carbon structural steel grades specified under different national standards. SS490 is a structural steel grade under JIS G3101, while Q275A is a carbon structural steel grade under GB/T 700.
They should not be described as weathering steel, Corten steel, or wear-resistant steel unless a separate material specification confirms those properties. The appropriate grade should be selected according to the required standard, mechanical properties, dimensions, and application.
SS490 and Q275A Mechanical Properties
| Grade | Standard | Yield Strength | Tensile Strength |
|---|---|---|---|
| SS490 | JIS G3101 | 285 MPa min. for applicable thicknesses | 490–610 MPa |
| Q275A | GB/T 700 | 275 MPa min. | 410–540 MPa |
Mechanical properties vary according to product thickness and the applicable standard requirements. The mill test certificate should be used to verify the actual properties of the supplied steel.
Channel steel is a structural steel profile with a U-shaped or C-shaped cross-section consisting of a web and two flanges. It is widely used in building structures, mechanical equipment, vehicle frames, industrial facilities, and other applications where a combination of strength, stiffness, weldability, and fabrication performance is required.
Channel steel is commonly manufactured by hot rolling, and its available grades, dimensions, and mechanical properties depend on the applicable product standard.
Typical channel steel applications include building frames, secondary structural members, equipment supports, vehicle frames, machinery bases, warehouse structures, and industrial support systems. The exact profile size and steel grade should be selected according to the required load, span, connection method, and fabrication requirements.
Angle steel, also known as angle iron, is a structural steel profile with two legs arranged at an angle, most commonly at 90 degrees. Equal angle and unequal angle profiles can be used as load-bearing members, bracing, frames, supports, and connections in structural and engineering applications.
Typical uses include building structures, bridges, transmission towers, machinery, industrial facilities, storage racks, cable supports, and equipment frames.
Angle steel is commonly produced from carbon or low-alloy steel billets through a hot-rolling process. Depending on the specified grade and product standard, the finished profile may be supplied in a hot-rolled or other specified delivery condition.
Important selection factors include yield strength, tensile strength, weldability, dimensional accuracy, and the required angle profile. For structural projects, the applicable standard and mill test certificate should be checked before u
More Profile Steel Products
H-section, channel steel, and angle steel can be supplied in different sizes and steel grades according to project requirements. For structural section steel in China, relevant dimensional standards include GB/T 706 for hot-rolled section steel and GB/T 707 for hot-rolled channel steel. International standards such as JIS and ASTM may apply depending on the requested grade and market.
Available profiles can include H-sections, channels, equal angles, unequal angles, and other structural steel sections. Exact dimensions, tolerances, steel grade, and delivery condition should be confirmed according to the applicable product standard and project specification.
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Application |
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H-section steel, channel steel, and angle steel are widely used in structural and industrial applications. H-sections are commonly used as beams and columns, channel steel is used for frames, supports, and equipment structures, while angle steel is frequently used for bracing, supports, towers, racks, and connection members. Grade and profile selection should be based on the structural load, design requirements, fabrication method, and applicable material standard.
1.What is the purpose of a channel?
Channel steel is primarily used as a structural and support profile in construction, machinery, vehicle frames, industrial equipment, and other fabricated structures. Its web-and-flange configuration provides useful strength and stiffness while allowing the profile to be incorporated into welded or bolted assemblies.
2.How is channel steel made?
Channel steel is commonly manufactured by hot rolling. Steel billets are heated to the required rolling temperature and passed through a series of forming rolls that progressively produce the required channel profile. After rolling, the sections may undergo cutting, straightening, inspection, and other finishing operations according to the applicable product standard and customer requirements.
3. Is section steel strong?
The strength of section steel depends on the steel grade, profile geometry, dimensions, and manufacturing standard. H-sections, channels, and angles can all be designed for structural applications, but their load-bearing capacity is not determined by the profile name alone. For a specific project, the required yield strength, tensile strength, section modulus, dimensions, and design load should be considered together.
4.What grade is channel steel?
Channel steel can be manufactured from different structural steel grades depending on the applicable national or international standard. Commonly specified grades may include ASTM, JIS, or GB grades according to the customer's project requirements. For example, SS490 is specified under JIS G3101, while Q275A is specified under GB/T 700. The applicable grade should always be confirmed together with the required channel dimensions and product standard.
5.Which section steel is best for structural applications?
There is no single best section steel for every structural application. H-section steel is commonly selected for beams and columns because of its efficient load-bearing geometry, while channel steel and angle steel are often used for supports, frames, bracing, and secondary structural members. The appropriate profile depends on the required load capacity, span, connection method, available space, steel grade, and project design.