As a direct factory supplier of structural steel products, we specialize in high-quality hot-rolled equal steel angle bars engineered exclusively for building and construction applications, available in three globally recognized mainstream grades: S275jr, ASTM A36, and Q235. These carbon structural steel angle bars feature a standard 90-degree symmetrical L-shaped cross-section, manufactured via advanced industrial hot-rolling technology to comply with strict international and national steel standards, delivering consistent mechanical properties, precise dimensional accuracy, and exceptional structural reliability. Tailored to meet the diverse load-bearing and construction requirements of modern building projects, our product line combines cost-efficiency, superior processability, and long-term durability, making it the preferred choice for general construction, high-rise buildings, industrial workshops, and various civil engineering infrastructures worldwide.
Core Material Grades & Standard Compliance
Our building-specific steel angle bars are produced in three premium grades, each adhering to rigorous international standards, with unique performance characteristics to suit different building design loads and regional specification requirements, ensuring full compatibility with global construction codes and project standards.
1. S275jr Steel Angle Bar
S275jr is a high-performance non-alloy structural steel grade complying with the European standard EN 10025-2, widely adopted across European and international construction markets. The numerical value 275 indicates a minimum yield strength of 275 MPa, offering higher load-bearing capacity than conventional mild steel grades, while the "JR" designation guarantees reliable room-temperature impact toughness, effectively resisting dynamic loads and reducing the risk of brittle fracture in building structures. This grade features balanced chemical composition, excellent weldability and cold formability, making it ideal for medium to heavy-duty building frameworks, support columns, and load-bearing components that demand enhanced strength and structural safety.
2. ASTM A36 Steel Angle Bar
ASTM A36 is the most commonly used carbon structural steel grade in the American and global construction industries, complying with ASTM International standards for structural steel. As a versatile mild carbon steel, it offers a minimum yield strength of 250 MPa and exceptional overall performance, with outstanding ductility, toughness, and compatibility with all standard welding, cutting, and bending processes. ASTM A36 angle bars are highly adaptable to diverse building applications, from basic support brackets to main structural frameworks, renowned for its stable performance, ease of processing, and compliance with international building safety regulations, suitable for a wide range of commercial and residential construction projects.
3. Q235 Steel Angle Bar
Q235 is a classic general-purpose carbon structural steel grade, a cost-effective staple in global civil and industrial construction. The "Q" stands for yield strength, with 235 representing aminimum yield strength of 235 MPa, providing reliable load-bearing capacity for light to medium-duty building applications. Featuring low carbon content and uniform internal structure, Q235 angle bars excel in processability and affordability, requiring no complex heat treatment for routine construction use. It is the optimal choice for general building supports, partition frameworks, auxiliary structures, and large-scale construction projects with strict cost control requirements, without compromising basic structural stability.
Production & Quality Advantages as a Factory Supplier
As a direct factory manufacturer, we control the entire production chain from raw material selection to finished product inspection, ensuring uncompromised quality and stable supply for large-scale building projects. Our steel angle bars are fabricated from high-purity continuous-cast steel billets, undergoing multi-pass hot rolling, precision straightening, and controlled cooling processes to achieve strict tolerance control for leg length, thickness, right-angle accuracy, and overall straightness. Every batch undergoes comprehensive quality testing, including chemical composition analysis, mechanical property testing, and dimensional verification, fully meeting the quality standards for building structural materials.
We offer complete specifications of equal angle bars to match diverse building design needs, with customizable length options available for bulk construction orders. Our factory direct supply model eliminates intermediate links, providing competitive wholesale pricing, fast order fulfillment, and consistent batch quality-critical factors for uninterrupted construction progress and cost management in large building projects.
Key Product Features for Building Applications
Multi-Grade Versatility: Three standard grades cover light, medium, and heavy-duty building needs, compatible with global construction standards and regional project specifications, suitable for residential, commercial, and industrial building projects.
Superior Construction Processability: All grades exhibit excellent weldability, cuttability, bendability, and drillability, supporting on-site fabrication and quick installation, significantly reducing construction labor and time costs for building projects.
Exceptional Structural Stability: Symmetrical L-shaped cross-section ensures even stress distribution, resisting compression, bending, and shear forces effectively, maintaining long-term structural integrity for building frameworks and support components.
Durable Building-Grade Quality: Hot-rolled solid structure, minimal internal defects, and stable mechanical properties, with good corrosion resistance for general building environments; upgradeable surface treatments (anti-rust oil, galvanized, painted) available for harsh outdoor building conditions.
Factory Direct Cost Efficiency: Bulk production capacity, stable raw material supply, and direct factory pricing deliver optimal cost-performance ratio, ideal for large-scale building project procurement and long-term cooperative supply.
Strict Building Material Compliance: Full compliance with international building steel standards, qualified for structural use in various construction projects, with complete quality certification and test reports available.
Main Building & Construction Applications
Our S275jr, ASTM A36, and Q235 steel angle bars are specially designed for building and construction scenarios, widely used in residential building frameworks, commercial high-rise buildings, industrial workshop structures, warehouse constructions, bridge auxiliary facilities, roof truss systems, wall support brackets, pipeline and cable supports for buildings, staircase components, and various building auxiliary structures. Q235 grade is preferred for light-duty general building supports and cost-sensitive projects; ASTM A36 caters to versatile general construction and international standard projects; S275jr is selected for medium to heavy-duty building structures requiring higher strength and safety margins. Backed by factory direct supply and reliable quality, our steel angle bars provide stable and efficient structural support for all types of building construction projects worldwide.
