Construction 45X45 50X50 56X56 3mm 4mm 5mm 6mm Thickness Q235 Structural Angle Steel

Our Q235 structural angle steel, available in targeted specifications of 45X45, 50X50, 56X56 equal-legged configurations with thicknesses of 3mm, 4mm, 5mm, and 6mm, is a dedicated and reliable solution for diverse construction projects. As a premium product compliant with China's GB/T 700 standard, Q235 structural angle steel is fabricated from high-quality carbon steel with strictly controlled chemical compositions (carbon content ≤0.22%, manganese content 0.30%-0.65%, and trace amounts of silicon, phosphorus, and sulfur). This optimized composition endows the angle steel with balanced mechanical properties and structural stability, making it an ideal choice for light to medium-duty load-bearing and framing components in construction.

In terms of mechanical performance, Q235 structural angle steel exhibits exceptional characteristics tailored to construction requirements. It boasts a minimum yield strength of 235 MPa and a tensile strength range of 375-500 MPa, ensuring reliable load-bearing capacity to withstand static and dynamic stresses in typical building structures. A key advantage is its excellent ductility (minimum elongation of 26% in standard specimens), which allows for seamless on-site fabrication processes such as bending, cutting, and welding without compromising structural integrity. Additionally, it features superior weldability, compatible with standard welding methods including shielded metal arc welding (SMAW) and gas metal arc welding (GMAW), facilitating easy integration into various construction assemblies.

The targeted specifications of our Q235 structural angle steel are meticulously designed to meet common construction needs. The 45X45, 50X50, and 56X56 equal-legged (L-shaped) configurations ensure balanced load distribution across both legs, critical for maintaining structural stability in framing and support systems. The thickness options of 3mm to 6mm provide graded load-bearing capabilities: 3mm and 4mm variants are suitable for light-duty applications such as interior partitions and non-load-bearing framing, while 5mm and 6mm variants excel in medium-duty scenarios like exterior wall framing and small-span floor joists. Manufactured via advanced hot-rolling technology (conducted at temperatures above 900°C, exceeding the steel's recrystallization point), the angle steel benefits from refined grain structures that enhance toughness and impact resistance, while ensuring precise dimensional accuracy, consistent leg squareness, and uniform thickness across each piece.

Designed specifically for construction applications, our Q235 structural angle steel (45X45/50X50/56X56, 3-6mm) is widely utilized in residential buildings, commercial complexes, industrial workshops, and small-scale infrastructure projects. Common use cases include wall studs, ceiling joists, door/window frames, balcony railings, storage racks, and prefabricated building modules. Its carbon steel composition enables excellent compatibility with various surface protection techniques, such as hot-dip galvanization, epoxy coating, and powder coating, which significantly enhance corrosion resistance and extend service life in harsh environments like coastal areas, high-humidity regions, and industrial zones.

Stringent quality assurance protocols are implemented throughout the entire production cycle to ensure our Q235 structural angle steel meets GB/T 700 standards. Comprehensive testing procedures include chemical composition analysis via optical emission spectrometry, mechanical property verification (tensile, yield, and elongation tests), dimensional inspection with precision metrology tools, and surface defect detection. These rigorous measures guarantee consistent performance across every batch, providing engineers, contractors, and builders with the confidence to design and construct safe, durable, and code-compliant structures. With its tailored specifications, reliable performance, and cost-effectiveness, our Q235 structural angle steel is a preferred choice for targeted construction needs.