Our low-price ASTM A36, A53, Q235, and Q345 hot-rolled carbon equal angle bar steel is a high-quality, cost-effective structural steel profile characterized by its symmetrical equal-sided L-shaped cross-section, which delivers exceptional structural stability, uniform force distribution, and reliable load-bearing capacity. As a versatile core product in the carbon steel series, it is manufactured through advanced hot-rolling technology, adhering strictly to international (ASTM) and Chinese national standards, using high-purity carbon steel raw materials. This ensures consistent product quality, excellent processability, and competitive pricing, making it an ideal choice for large-scale bulk procurement across various industrial, construction, and manufacturing fields.
Equal angle bar steel, also known as equal-sided angle iron, is defined by its two identical-length legs (flanges) connected at a precise 90-degree right angle, a design that optimizes its ability to withstand bending and torsional forces in structural applications. Our product is produced via the hot-rolling process, a sophisticated manufacturing method that involves heating carbon steel billets to temperatures above the recrystallization point (typically 800-1000℃) before precision shaping through rolling mills. This process refines the material's internal grain structure, resulting in a smooth surface finish, tight dimensional tolerances, and enhanced ductility-key properties that enable easy cutting, bending, welding, and drilling without compromising the steel's structural integrity or mechanical performance.
The four core steel grades-ASTM A36, ASTM A53, Q235, and Q345-are all high-performance carbon and low-alloy carbon steels, each engineered to meet distinct mechanical requirements and application scenarios while maintaining excellent cost-efficiency. ASTM A36, compliant with the American Society for Testing and Materials (ASTM A36/A36M), is a general-purpose carbon structural steel with a minimum yield strength of 250MPa and a tensile strength range of 400-550MPa. It features a maximum carbon content of 0.25% and excellent weldability, making it widely used in construction, bridges, frameworks, and general mechanical manufacturing.
ASTM A53, following ASTM A53/A53M standards, is a carbon steel pipe and angle bar grade primarily designed for pressure and mechanical applications. It has a minimum yield strength of 240MPa and a tensile strength range of 415-550MPa, with strict controls on chemical composition to ensure corrosion resistance and structural reliability, suitable for structural supports, piping accessories, and industrial frameworks. Q235, adhering to the Chinese national standard GB/T 700, is a mild carbon steel with a minimum yield strength of 235MPa and a tensile strength range of 375-500MPa. It is characterized by good toughness, easy formability, and low cost, serving as a staple material for general construction components, such as purlins, brackets, and light steel frames.
Q345 (equivalent to Q355 in updated standards), compliant with GB/T 1591, is a low-alloy high-strength carbon steel with a minimum yield strength of 345MPa and a tensile strength range of 470-630MPa. Its higher strength compared to mild carbon steel grades allows for reduced material thickness in structural designs, lowering overall project costs while maintaining stability, making it ideal for heavy-duty construction, engineering machinery, and load-bearing frameworks.
All four grades of our hot-rolled equal angle bar steel have strictly controlled harmful impurities (phosphorus ≤0.045% and sulfur ≤0.045%), effectively avoiding material brittleness and ensuring long-term durability in harsh environments, including outdoor, humid, and industrial settings. The equal-sided design ensures uniform force transmission, making it suitable for both single-component use and assembly into complex structural systems. With competitive pricing, consistent quality, and versatile performance, this angle bar steel meets the diverse needs of global customers, providing a reliable and cost-effective structural solution for various projects.
