This product line specializes in high-quality hot-rolled mild carbon steel angle bars, engineered with two globally recognized core carbon structural steel grades-SS400 and Q235. As a fundamental and versatile structural section steel, it features a precise 90-degree symmetrical L-shaped cross-section with identical leg lengths, crafted via advanced hot-rolling technology to ensure exceptional quality, stable mechanical properties, and strict dimensional accuracy. Made from high-purity mild carbon steel, this angle bar combines superior processability, cost-efficiency, and long-term durability, adhering to international industrial standards to serve as a reliable structural material for diverse industrial, construction, and fabrication applications worldwide.
Core Material Grades & Mechanical Performance
All angle bars in this series are manufactured from premium mild carbon steel, with two mainstream grades that cater to different load-bearing requirements and application scenarios, ensuring consistent quality and wide adaptability across global markets.
1. Q235 Mild Carbon Steel Angle Bar
Q235 is a classic general-purpose mild carbon structural steel grade, widely recognized for its balanced performance and cost-efficiency. The letter "Q" denotes yield strength, with 235 representing a minimum yield strength of 235 MPa, providing reliable load-bearing capacity for light to medium-duty structural applications. Characterized by low carbon content, Q235 exhibits excellent weldability, cuttability, and formability, requiring no complex heat treatment for routine use. Its uniform internal microstructure, achieved through refined smelting and rolling processes, eliminates common defects such as porosity and inclusions, ensuring consistent batch-to-batch performance. This grade is an optimal choice for general construction, auxiliary structures, support brackets, and routine fabrication projects where cost-effectiveness and basic structural stability are prioritized.
2. SS400 Mild Carbon Steel Angle Bar
SS400 is a standard general-purpose carbon structural steel grade complying with Japanese Industrial Standards (JIS G3101), where "SS" stands for Steel Structure and 400 indicates a minimum tensile strength of 400 MPa. With moderate carbon content, SS400 offers balanced mechanical properties, including good ductility, plasticity, and weldability, making it suitable for a wide range of light to medium-duty structural applications. This grade is globally recognized for its stable performance and reliability, featuring a dense internal structure that ensures strong resistance to bending, shear, and compressive forces. SS400 angle bars are widely used in industrial frameworks, mechanical equipment supports, and construction projects, especially in markets that adhere to JIS standards, delivering consistent quality and long-term durability.
Production Process & Product Features
Our SS400 and Q235 mild carbon angle bars are produced via advanced hot-rolling technology, using high-quality continuous-cast mild steel billets that undergo rigorous raw material inspection to ensure purity and quality. The multi-pass hot-rolling process precisely shapes the billets into the symmetrical 90-degree L-shaped cross-section, followed by controlled cooling and high-precision straightening to maintain perfect flatness, verticality, and dimensional consistency.
As high-quality mild carbon steel products, these angle bars feature a smooth, clean surface with minimal oxide scale, free from visible cracks, scratches, or mechanical damages, and a uniform cross-section throughout the entire length. They exhibit exceptional processability, supporting conventional processing methods such as arc welding, gas cutting, cold bending, and drilling, which greatly simplifies on-site fabrication and installation. The hot-rolled manufacturing process further enhances the material's toughness and ductility, ensuring it can withstand daily structural stress without deformation or fracture, meeting the high-quality requirements of modern engineering projects.
Key Product Advantages
Premium Mild Carbon Quality: Manufactured from high-purity mild carbon steel, ensuring stable mechanical properties, dense internal structure, and long-term durability, fully meeting high-quality industrial standards.
Dual-Grade Versatility: SS400 and Q235 grades cover light to medium-duty load requirements, providing flexible material choices for different project scales, budget considerations, and regional standard demands.
Advanced Hot-Rolled Craftsmanship: Precision hot-rolling technology ensures strict dimensional accuracy, perfect 90-degree right-angle precision, and uniform cross-section, enabling seamless on-site assembly and compatibility with project designs.
Superior Processability: Excellent weldability, cuttability, and bendability reduce on-site processing difficulty and labor costs, improving construction and fabrication efficiency.
Cost-Effective Performance: Balancing high quality and competitive pricing, these angle bars offer optimal cost-performance ratio, suitable for large-scale bulk procurement and long-term project cooperation.
Wide Application Adaptability: Compatible with diverse industrial and construction scenarios, requiring no complex post-processing, making it a versatile choice for global engineering projects.
Main Application Scenarios
This series of hot-rolled SS400 and Q235 high-quality mild carbon angle bars is extensively applied in industrial, construction, and manufacturing fields. Its symmetrical L-shaped design and dual-grade options make it ideal for building frameworks, roof trusses, wall brackets, storage shelves, and balanced support structures. Specific applications include industrial workshops, commercial buildings, warehouse constructions, pipeline supports, transmission tower auxiliary components, mechanical equipment bases, and general hardware manufacturing. Q235 is preferred for cost-sensitive light-duty projects, while SS400 is suitable for applications requiring higher tensile strength and stable performance. With its reliable quality, superior processability, and versatile performance, this mild carbon angle bar serves as an indispensable structural material for global engineering and fabrication projects.
