This product line covers high-standard equal steel angle bars manufactured in strict compliance with ASTM specifications and Chinese national structural steel standards, mainly including two core grades: Q235 mild carbon steel and Q345 Grade B high-strength low-alloy carbon steel. As a widely used hot-rolled structural section steel, equal angle steel features a symmetrical 90-degree L-shaped cross-section with identical leg lengths, delivering exceptional structural stability, mechanical strength and processing adaptability for a full spectrum of industrial and construction applications.
Material Grades & Core Mechanical Properties
1. Q235 Equal Steel Angle Bar
Q235 is a classic general-purpose mild carbon structural steel grade, with the letter "Q" representing yield strength and the numerical value 235 indicating a minimum yield strength of 235 MPa. This grade is characterized by low carbon content, excellent weldability, formability and machinability, with stable chemical composition and consistent mechanical performance. It is a cost-effective material choice for light-duty structural components, offering reliable load-bearing capacity for routine construction and fabrication projects without requiring complex heat treatment post-processing. Fully aligned with ASTM dimensional and quality benchmarks, it ensures uniform cross-section, smooth surface and tight tolerance control for seamless on-site installation and assembly.
2. Q345 Grade B Mild Carbon Steel Angle Bar
Q345 Grade B is a high-strength low-alloy carbon structural steel, boasting a minimum yield strength of 345 MPa, significantly higher than Q235 grade, making it ideal for medium to heavy-duty structural applications. The Grade B classification ensures qualified impact toughness at room temperature, enhancing its resistance to dynamic loads and low-stress brittle fracture. With optimized alloying elements, this grade balances superior strength and good processing performance, maintaining excellent weldability and bending formability while improving overall load-bearing capacity and durability. It fully meets ASTM standard requirements for structural steel sections, guaranteeing high dimensional accuracy, straightness and surface quality, suitable for engineering projects with strict structural safety and load requirements.
Production Process & Product Features
Our equal steel angle bars are produced via advanced hot-rolling technology, using high-quality billets to ensure internal density and structural uniformity, eliminating internal defects such as porosity and cracks. The precise rolling process ensures strict control over leg length, thickness, right-angle accuracy and overall straightness, complying with ASTM standard tolerances to guarantee consistent product dimensions batch after batch. The surface is clean and free of heavy scale, cracks or mechanical damages, supporting direct welding, drilling, cutting and bending processing. As equal angle steel, the symmetrical L-shaped design provides balanced stress distribution, enabling it to withstand axial pressure, bending and shear forces effectively, making it a versatile structural profile for various engineering frameworks.
Key Advantages
Standard Compliance: Manufactured in full accordance with ASTM specifications and relevant national standards, ensuring product quality, mechanical properties and dimensional accuracy meet international industrial requirements.
Dual Grade Adaptability: Q235 grade offers cost efficiency for general applications, while Q345 Grade B provides enhanced strength for heavy-duty scenarios, covering diverse project needs.
Excellent Processability: Both grades feature outstanding weldability, bendability and machinability, supporting flexible on-site processing and construction, reducing installation difficulty and construction period.
Durability & Stability: Hot-rolled solid structure, stable chemical composition and reliable mechanical performance ensure long service life and stable load-bearing capacity in complex working environments.
Wide Specification Range: Available in a complete range of equal angle sizes to match different design loads and structural layout requirements, with customizable options available for specific project demands.
Main Application Scenarios
This series of equal steel angle bars is extensively applied in construction engineering, machinery manufacturing, steel structure fabrication, transportation infrastructure, power engineering and general industrial fabrication. Typical applications include building frame structures, support brackets, transmission tower components, engineering machinery parts, shelf structures, pipeline support frames and decorative steel structures. Q235 angle bars are preferred for light-load, cost-sensitive general projects, while Q345 Grade B angle bars are widely used in high-rise buildings, industrial workshops, bridge accessories and other medium to heavy-duty structural projects requiring high strength and safety margins.
With strict quality control throughout the production process, our ASTM-compliant Q235 and Q345 Grade B equal steel angle bars combine reliable quality, stable performance and cost-effectiveness, serving as a core structural material for global engineering and manufacturing projects.
