50*50*5 Q235 Grade Angle Iron Equal and Unequal Angle Steel

Q235 grade angle iron, available in both equal and unequal configurations with the standard specification of 50*50*5, is a high-quality mild carbon structural component widely recognized for its reliability, versatility, and cost-effectiveness. Adhering to the Chinese national standard GB/T 700, this angle steel is crafted from Q235 mild carbon steel, a core material in structural engineering, and is designed to cater to diverse load-bearing and installation needs across various industries, particularly in building construction, machinery manufacturing, and light-duty structural applications.

The 50*50*5 specification refers to the equal angle steel variant, where the two mutually perpendicular legs are each 50mm in length, with a uniform leg thickness of 5mm. This dimension is carefully calibrated to balance strength and weight, making it an ideal choice for medium-light structural applications that require stable support without excessive material consumption. In addition to the 50*50*5 equal angle steel, our product line also includes unequal angle steel of the same Q235 grade-featuring legs of different lengths (e.g., 50mm×30mm, 63mm×40mm) with a consistent thickness of 5mm-providing flexible solutions for asymmetric load-bearing scenarios and space-constrained installation environments.

All Q235 grade angle iron, whether equal or unequal, is manufactured through advanced hot rolling technology, a mature process that ensures superior product performance and dimensional accuracy. During production, Q235 steel billets are heated to a high temperature (exceeding 1100°C) to achieve optimal plasticity, then subjected to precision rolling to form the characteristic L-shaped cross-section. This process refines the internal grain structure of the steel, enhancing its mechanical properties, while ensuring strict control over leg length, thickness, and right-angle precision. The result is a smooth surface finish free from defects such as cracks, burrs, or delamination, and consistent dimensional tolerance that meets industry standards.

As a mild carbon steel grade, Q235 boasts a well-balanced chemical composition-with carbon content ranging from 0.14% to 0.22% and manganese content between 0.30% and 0.65%-which endows the angle iron with excellent mechanical performance. It features a minimum yield strength of 235 MPa and a tensile strength ranging from 375 to 500 MPa, providing sufficient load-bearing capacity for medium-light structural applications. Additionally, Q235 angle iron exhibits outstanding weldability, ductility, and machinability, allowing for easy cutting, drilling, bending, and assembly on-site, which simplifies construction and fabrication processes and reduces project costs.

The equal and unequal variants of Q235 50*50*5 series angle iron serve distinct structural purposes. Equal angle iron (50*50*5) offers symmetric support in two perpendicular directions, ensuring uniform force distribution, making it suitable for building frames, wall reinforcements, roof trusses, floor joists, and auxiliary structures such as scaffolding and formwork supports. Unequal angle iron, with its asymmetric leg design, is ideal for scenarios requiring asymmetric load-bearing or space-saving installation, such as edge reinforcement, beam supports, bracket fabrication, and irregular structural connections, where one leg provides stable attachment and the other offers extended support.

To enhance durability and adaptability to harsh environments, Q235 angle iron can be subjected to surface treatments such as hot-dip galvanization or anti-rust painting. These treatments form a protective layer that effectively resists corrosion, oxidation, and wear, extending the product's service life in both indoor and outdoor applications, including humid, industrial, or coastal environments. All products undergo strict quality control, with comprehensive testing of chemical composition, mechanical properties, and geometric dimensions to ensure full compliance with GB/T 700 standards and industry requirements.

With its standardized 50*50*5 specification, premium Q235 material, dual options of equal and unequal configurations, and excellent process performance, this angle iron is a cost-effective and reliable structural solution. It is widely applied in residential buildings, commercial facilities, industrial workshops, civil engineering, and machinery manufacturing, serving as a fundamental component that ensures the stability, safety, and longevity of structural systems. For engineers, contractors, and manufacturers seeking versatile, high-performance mild steel angle solutions, Q235 grade 50*50*5 equal and unequal angle iron stands out as an optimal choice.