Hot Sale Structural Carbon Equal Angle Steel ASTM A36 Q235 S235JR is a high-quality, cost-effective structural steel product, specifically designed as equal-angle steel with a symmetrical L-shaped cross-section, where both legs feature identical length and uniform thickness. This product is engineered to comply with three internationally recognized standards-American ASTM, Chinese GB/T, and European EN-integrating the advantages of each standard to meet the diverse needs of global structural engineering projects, and its hot-sale status is a testament to its reliable performance and wide applicability.
As a core structural component, this equal angle steel is crafted from three premium carbon structural steel grades, each with well-defined chemical compositions and mechanical properties to suit different application scenarios. Q235 is a Chinese national standard (GB/T 700) carbon structural steel, with a carbon content ranging from 0.14% to 0.22%, supplemented by appropriate amounts of manganese and silicon to optimize its mechanical performance. It offers a minimum yield strength of 235 MPa and a tensile strength of 370-500 MPa, striking an excellent balance between cost-effectiveness and basic structural load-bearing capacity, making it the preferred choice for general structural projects.
ASTM A36, the American standard (ASTM A36/A36M) equivalent of Q235, is one of the most widely used carbon structural steels in North American and global markets. With a minimum yield strength of 250 MPa and a tensile strength of 400-550 MPa, it exhibits superior ductility, weldability, and formability. Its chemical composition (carbon content ≤0.25%, manganese 0.80%-1.20%) ensures excellent workability, allowing for easy cutting, bending, and welding without compromising structural integrity, making it suitable for a wide range of static load-bearing applications.
S235JR is a European standard (EN 10025-2) non-alloy structural steel, comparable to Q235 and ASTM A36 in performance. It features a minimum yield strength of 235 MPa (at room temperature) and a tensile strength of 360-510 MPa, with good toughness (JR grade indicates notch impact resistance at 20°C). Its chemical composition is strictly controlled, with carbon content ≤0.17% and manganese content 0.30%-0.60%, ensuring stable mechanical properties and excellent compatibility with European engineering standards, making it ideal for projects in the European market and global projects adhering to EN specifications.
The product is manufactured using advanced hot-rolling technology, a critical process that ensures its superior quality. During production, carbon steel billets are heated to a high temperature (above 1000°C) to soften the material, then subjected to precision rolling to form the symmetrical L-shaped equal-angle cross-section. This hot-rolling process refines the internal grain structure of the steel, eliminates internal defects such as pores, inclusions, and microcracks, and enhances the material's ductility and toughness. As a result, the equal angle steel can be easily processed using standard industrial methods, including arc welding, MIG welding, TIG welding, cutting, bending, and drilling, with no significant hardening in the heat-affected zone, ensuring strong and durable joints.
In terms of specifications, the Hot Sale Structural Carbon Equal Angle Steel ASTM A36 Q235 S235JR offers a comprehensive range of dimensions to accommodate diverse project requirements. The leg length (equal for both sides) ranges from 20mm to 200mm (0.75 inches to 8 inches), with thicknesses spanning 3mm to 25mm (0.12 inches to 1 inch), and standard lengths of 6m, 9m, and 12m (20 feet to 40 feet). Custom lengths (up to 18m/60 feet) and special dimensions are available for bulk orders, catering to project-specific needs. Popular standard sizes include 50x50x5mm, 75x75x8mm, 100x100x10mm, and 120x120x12mm, all of which are regularly stocked to ensure timely delivery for hot-sale demand.
Due to its reliable performance, wide standard compatibility, and cost-effectiveness, this equal angle steel is widely applied in various industries. In construction engineering, it is used for building frames, roof trusses, floor joists, scaffolding, balcony railings, and wall supports. In industrial fabrication, it serves as supports for machinery, equipment bases, factory frameworks, and conveyor systems. In infrastructure projects, it is utilized in bridge bracing, transmission towers, road guardrails, and drainage systems. It also finds applications in warehousing (shelves, cargo pallets) and civil decoration (sunrooms, courtyard railings), demonstrating its versatility and practicality.
Each batch of this hot-sale equal angle steel undergoes strict quality control procedures to ensure consistent quality and performance. The quality inspection includes chemical composition analysis, mechanical property testing (yield strength, tensile strength, impact toughness), dimensional accuracy verification, and surface quality assessment. The surface of the hot-rolled equal angle steel features a natural oxide film, which can be further treated with hot-dip galvanization, electro-galvanization, or painting to enhance corrosion resistance, extending its service life in outdoor, humid, or corrosive environments. As a hot-sale structural material, it combines reliability, cost-effectiveness, and versatility, making it an indispensable choice for modern global engineering projects.
