Hot Rolled Carbon Steel 50*50*5 Q235 Grade Angle Iron, available in both equal and unequal leg configurations, is a high-quality structural carbon steel product engineered for diverse industrial, construction, and fabrication applications. Characterized by its iconic L-shaped cross-section, precise 50*50*5mm core dimension (50mm legs with 5mm uniform thickness for the equal variant), and adherence to Q235 carbon steel standards, this hot-rolled angle iron combines exceptional mechanical properties, excellent workability, and cost-effectiveness. As a staple in structural materials, it caters to varied load-bearing and installation needs through its dual configurations, making it an indispensable component in projects ranging from light-duty framing to medium-duty reinforcement.
At the core of this product's reliability is its Q235 grade carbon steel composition, a widely adopted mild carbon structural steel standard (GB/T 700-2006) renowned for its balanced performance. Q235 carbon steel features a controlled chemical makeup: carbon (≤0.22%), silicon (≤0.35%), manganese (≤1.40%), and trace impurities, which endow the angle iron with key properties critical for structural use. Its mechanical parameters are tailored for versatility: a minimum yield strength of 235 MPa, a tensile strength range of 375-500 MPa, and a minimum elongation of 26%. This combination ensures excellent ductility, toughness, and resistance to static and minor dynamic loads, while also facilitating easy fabrication-essential for adapting to diverse project requirements.
The product is distinguished by its dual configurations-equal and unequal angle steel-each designed to address specific structural needs, with the 50*50*5mm dimension serving as the standard for the equal leg variant. Equal angle steel, with its symmetrical 50mm×50mm legs and 5mm thickness, ensures balanced load distribution across both perpendicular legs, providing uniform strength and rigidity. This configuration is ideal for applications requiring symmetrical support, such as building frames, roof trusses, wall bracing, and equipment supports. Unequal angle steel, while maintaining the same 5mm thickness, features legs of different lengths (with one leg typically 50mm to align with standard specifications), designed to accommodate uneven loads and irregular structural configurations, such as beam supports, column connections, and asymmetric framing.
The hot-rolling manufacturing process is pivotal to enhancing the performance and precision of this Q235 grade angle iron. Raw Q235 carbon steel billets are first subjected to rigorous pre-inspection to verify chemical composition and purity, ensuring full compliance with grade standards. The billets are then heated to a controlled high temperature (1100°C–1250°C) to maximize plasticity, eliminating brittleness and enabling seamless shaping. Subsequently, the heated billets are passed through a series of calibrated rolling mills, which precisely form either the equal (50*50*5mm) or unequal L-shaped cross-section. This process refines the steel's grain structure, ensures uniform thickness and tight dimensional tolerances (±0.3mm for leg length and ±0.2mm for thickness), and creates a slightly textured surface that promotes strong adhesion with welding materials and surface coatings-enhancing long-term durability.
Exceptional workability is a defining advantage of this hot-rolled carbon steel angle iron, making it highly adaptable to on-site fabrication and installation. It exhibits superior weldability, compatible with common welding methods such as arc welding, gas welding, and resistance welding, enabling seamless integration with other steel components (e.g., beams, columns, purlins, and concrete reinforcements) without the need for pre-heating or special additives. Additionally, the material can be easily cut, punched, bent, and drilled using standard industrial equipment, allowing for customization to fit unique project designs-from simple brackets to complex structural systems.
Its versatile configurations and reliable performance make it suitable for a wide range of applications. In construction, it is used for light steel building framing, roof truss supports, foundation reinforcements, and wall partitions; in industrial fabrication, it serves as machinery frames, equipment supports, conveyor systems, and storage racks; and in infrastructure projects, it is utilized for road guardrails, pipeline supports, and temporary formwork. The 50*50*5mm equal variant, in particular, is a standardized choice for small to medium-duty applications, while the unequal variant provides flexibility for asymmetric structural needs.
To extend its service life in varied environments-including outdoor, humid, or industrial settings-this Q235 grade angle iron can be equipped with optional surface treatments. Hot-dip galvanizing, anti-corrosive painting, or powder coating forms a protective barrier against moisture, rust, and environmental pollutants, preventing corrosion and reducing long-term maintenance costs. This ensures the material maintains its structural integrity and appearance over its lifecycle, even in harsh conditions.
Rigorous quality control measures are implemented throughout the entire production and inspection process to uphold product integrity. Each batch of Hot Rolled Carbon Steel 50*50*5 Q235 Grade Angle Iron undergoes comprehensive testing, including chemical composition analysis (to verify Q235 grade compliance), mechanical property evaluation (yield strength, tensile strength, elongation, and impact toughness), dimensional accuracy checks, and surface quality inspections. Defects such as cracks, inclusions, uneven thickness, and surface scratches are strictly eliminated, ensuring every piece meets or exceeds national standards and project requirements.
In summary, Hot Rolled Carbon Steel 50*50*5 Q235 Grade Angle Iron (Equal & Unequal Angle Steel) is a versatile, high-performance structural material that combines the reliability of Q235 carbon steel, the precision of hot-rolling technology, and the flexibility of dual configurations. Its 50*50*5mm standard dimension, excellent workability, and cost-effectiveness make it suitable for diverse applications, while strict quality control ensures consistent performance and durability. It is the trusted choice for engineers, contractors, and manufacturers seeking a reliable, adaptable solution for structural framing, bracing, and reinforcement needs.
