Angle Steel 40*25*3/4 Ss400 Sm490A Carbon Equal Angle Steel Cheap Prime Quality Angel Iron/ Hot Rolled Angel Steel for Building

Our hot rolled carbon equal angle steel, also known as angle iron, is a high-quality structural component designed specifically for building construction, featuring the standard specification of 40*25*3/4 and crafted from premium SS400 and SM490A carbon steel. As a prime quality product with competitive pricing, it adheres to international industry standards, boasting reliable mechanical properties, excellent structural stability, and cost-effectiveness, making it an ideal choice for various building construction scenarios, including frame reinforcement, truss fabrication, and auxiliary structural support.

The 40*25*3/4 specification defines the key dimensional parameters of this equal angle steel: the two mutually perpendicular legs measure 40mm and 25mm respectively, with two optional leg thicknesses of 3mm and 4mm. This well-calibrated dimension balance ensures optimal strength-to-weight ratio, making the angle steel suitable for light to medium-duty building applications-its compact structure allows for flexible installation in space-constrained areas, while the varying thickness options cater to different load-bearing requirements, from light decorative frames to medium-load structural connections.

This angle steel is manufactured through advanced hot rolling technology, a mature and reliable process that ensures consistent product quality and performance. During production, SS400 and SM490A carbon 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 of equal angle steel. This hot rolling process refines the internal grain structure of the steel, enhancing its tensile strength, impact toughness, and ductility, while ensuring strict control over leg length, thickness, and right-angle precision. The finished product features a smooth surface free from defects such as cracks, burrs, or delamination, meeting the strict quality requirements of building construction.

The SS400 and SM490A carbon steel grades selected for this angle steel are renowned for their superior performance in structural applications. SS400, a Japanese standard mild carbon steel (JIS G 3101), features a minimum yield strength of 245 MPa and a tensile strength ranging from 400 to 510 MPa. It offers excellent weldability, machinability, and formability, allowing for easy cutting, drilling, bending, and on-site assembly-key advantages that simplify construction processes and reduce project costs. SM490A, another Japanese standard carbon structural steel (JIS G 3106), boasts a higher minimum yield strength of 325 MPa and superior impact resistance, making it suitable for load-bearing components in building structures, such as beams, columns, and truss supports.

As a hot rolled equal angle steel, this product possesses unique advantages tailored to building construction needs. Its hot-worked structure ensures excellent dimensional stability and resistance to deformation under load, providing reliable support for building structures. The equal L-shaped cross-section enables uniform force distribution in two perpendicular directions, enhancing the overall stability of the structural system. Additionally, both SS400 and SM490A grades exhibit good compatibility with other building materials, allowing for secure connections with steel beams, concrete, and other structural components through welding, bolting, or riveting.

Committed to providing prime quality products at competitive prices, we implement strict quality control throughout the production process. Every batch of angle steel undergoes comprehensive testing, including chemical composition analysis, mechanical property testing (yield strength, tensile strength, impact toughness), and geometric dimension verification, to ensure full compliance with JIS standards and building construction industry requirements. To further enhance durability and corrosion resistance, the angle steel can be subjected to surface treatments such as hot-dip galvanization or anti-rust painting, extending its service life in indoor and outdoor building environments, including humid and mild industrial settings.

With its precise 40*25*3/4 specification, premium SS400 and SM490A materials, advanced hot rolling technology, and cost-effective pricing, this prime quality angle iron is a reliable structural solution for building construction. It is widely applied in residential buildings, commercial complexes, industrial workshops, and civil engineering projects, serving as a fundamental component that ensures the safety, stability, and longevity of building structures. For engineers, contractors, and construction enterprises seeking high-quality, affordable hot rolled angle steel, this product stands out as an optimal choice.