Q235B Hot Rolled Standard Packing Model Number: Ss400 Carbon Unqual Angle Steel

Our Q235B and Ss400 hot rolled carbon unequal angle steels, supplied with standard packing, are reliable and versatile structural components engineered to meet rigorous regional standards-Q235B complies with China's GB/T 700, while Ss400 adheres to Japan's JIS G 3101. Crafted from high-quality carbon steel with precisely controlled chemical compositions (Q235B: C ≤0.20%, Mn 0.30%-0.65%; Ss400: C ≤0.23%, Mn 0.30%-0.90%), these unequal angle steels combine excellent mechanical properties with structural stability, making them ideal for construction and industrial applications requiring asymmetric load distribution and tailored support solutions.

In terms of mechanical performance, Q235B and Ss400 carbon unequal angle steels exhibit consistent and reliable characteristics. Q235B boasts a minimum yield strength of 235 MPa and a tensile strength range of 375-500 MPa, while Ss400 offers a minimum yield strength of 235 MPa and tensile strength of 400-510 MPa, ensuring robust load-bearing capacity to withstand static and dynamic stresses. Both grades feature excellent ductility (minimum elongation ≥21% for Q235B; ≥22% for Ss400), enabling flexible on-site fabrication processes such as bending, cutting, and welding without compromising structural integrity. Their superior weldability, compatible with standard welding methods (SMAW, GMAW), facilitates seamless integration into diverse structural assemblies, adapting to the asymmetric force requirements of unequal angle applications.

The hot rolling manufacturing process (conducted at temperatures above 900°C, exceeding the steel's recrystallization point) is key to optimizing the performance of these unequal angle steels. This process refines the grain structure, enhancing toughness, impact resistance, and fatigue performance-critical for components subjected to cyclic loads. As unequal angle steels, they feature asymmetric leg lengths (common configurations include 50×32, 63×40, 75×50, etc., with thicknesses ranging from 3mm to 10mm), designed to provide targeted support in applications where load distribution is non-uniform. The hot rolling process ensures precise dimensional accuracy, consistent leg squareness, and uniform thickness, while the natural surface finish enables excellent adhesion for subsequent protective treatments. Additionally, the standard packing (typically bundled with steel straps, wrapped in waterproof paper) ensures safe transportation and storage, reducing product damage and simplifying on-site handling.

Designed for versatility in asymmetric load applications, Q235B and Ss400 hot rolled carbon unequal angle steels are widely utilized in commercial and industrial construction (building frames, roof trusses, wall bracing), infrastructure projects (bridge supports, guardrails, signal towers), mechanical equipment fabrication (equipment frames, brackets, conveyor systems), and prefabricated structural modules. Their carbon steel composition is compatible with various surface protection techniques (hot-dip galvanization, epoxy coating), significantly enhancing corrosion resistance and extending service life in harsh environments such as coastal areas, high-humidity regions, and industrial zones. The standard packing further adds value by ensuring product integrity during logistics, supporting efficient project scheduling.

Stringent quality assurance protocols are implemented throughout the production and packaging process to ensure Q235B and Ss400 unequal angle steels meet GB/T 700 and JIS G 3101 standards. Comprehensive testing includes chemical composition analysis via optical emission spectrometry, mechanical property verification (tensile, yield, elongation tests), dimensional inspection with precision tools, and surface defect detection. The standard packing process also undergoes quality checks to ensure stability and waterproofing. These rigorous measures guarantee consistent performance and product integrity across every batch, providing engineers, contractors, and fabricators with the confidence to design and construct safe, durable, and code-compliant structures. With their tailored asymmetric design, reliable performance, and convenient standard packing, Q235B and Ss400 carbon unequal angle steels are a preferred solution for targeted structural support needs.