Q235B channel steel is a long strip of steel with a grooved cross-section. It is a carbon structural steel used for construction and machinery, and is a steel section with complex cross-section.The raw material steel billet is carbon steel or low alloy steel billet with a carbon content not exceeding 0.25%. The finished channel steel is delivered in the state of hot forming, normalizing or hot rolling.

Specifications and Dimensions

    Specifications are expressed in millimeters for waist height (h), leg width (b), and waist thickness (d). For example, 100485.3 indicates a channel with a waist height of 100 mm, a leg width of 48 mm, and a waist thickness of 5.3 mm, also known as 10# channel steel. Domestic channel steel specifications range from 5# to 40#, corresponding to heights of 5-40 cm. Channel steel with the same waist height but different leg widths and waist thicknesses are distinguished by adding a, b, or c to the right of the model number, such as 25#a, 25#b, 25#c, etc. Channel steel is delivered in fixed lengths or multiple lengths. Domestic channel steel lengths range from 5-12 m, 5-19 m, and 6-19 m, depending on the specification. Imported channel steel generally ranges from 6-15 m.

Performance Characteristics

• Mechanical Properties: Q235B channel steel exhibits excellent strength and toughness, with a yield strength of no less than 235 MPa and a tensile strength exceeding 375 MPa, capable of withstanding certain loads and external forces.

• Machinability: This channel steel exhibits excellent machinability, maintaining high precision and surface quality during cutting, drilling, and bending. It also boasts excellent weldability and high-quality welds, contributing to the stability and safety of the overall structure.

• Corrosion Resistance: While Q235B channel steel exhibits average corrosion resistance, surface treatments such as galvanizing can significantly enhance its corrosion resistance, making it suitable for diverse environmental conditions.

Application Areas:

• Construction: It can be used to manufacture columns, beams, and load-bearing walls in building structures, providing support and load-bearing functions in construction projects. It can also serve as support and connectors for curtain walls.

• Manufacturing: It is often used as the framework and support structure for mechanical equipment, including various machine tools, conveying equipment, and lifting machinery, ensuring the stability and reliability of the equipment.

• Bridge Construction: It can be used to manufacture bridge girders, cantilever beams, and piers. It has excellent load-bearing capacity and seismic resistance, effectively dissipating the vibration loads caused by vehicle movement.

• Vehicle Manufacturing: It can be used to manufacture frames for trucks, trailers, and vans. Its excellent strength and rigidity ensure the structural stability of these vehicles. It can also be used in other structural components for vehicles such as cars and trains.

• Shipbuilding: It can be used to manufacture ship hull structures and outfitting equipment support structures, meeting the strength and stability requirements for ships sailing at sea.

Summary

    Q235B channel steel, thanks to its excellent mechanical properties, low cost, and flexible fabrication, has become a common structural material in buildings, bridges, machinery, and other fields. Through standardized specifications, optional anti-corrosion surface treatments, and a mature supply chain, it can meet diverse needs, from lightweight supports to medium-thick plates and long-span structures. It is one of the most cost-effective common carbon structural steel profiles. 

   If you currently have purchasing needs or technical consultation for Q235B channel steel, please feel free to contact us and we will provide professional solutions and service support.

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