Angel Steel Hot Rolled Carbon Steel 50*50*5 Ss400 Q235 Q345c S235jr Grade Equal Angle Steel

This product line specializes in high-quality hot-rolled carbon steel equal angle steel, featuring a fixed standard specification of 50×50×5 mm and engineered with four globally recognized structural steel grades-SS400, Q235, Q345c, and S235jr. As a fundamental L-shaped structural section, it boasts a precise 90-degree symmetrical cross-section with identical 50mm leg lengths and a uniform 5mm thickness, meticulously manufactured via advanced hot-rolling technology to comply with international and national standards (JIS, GB, EN). Crafted from premium carbon steel, this equal angle steel delivers stable mechanical properties, strict dimensional accuracy, and superior processability, serving as a reliable load-bearing component for industrial, construction, and fabrication applications worldwide.

Core Material Grades & Technical Specifications

All 50×50×5 mm equal angle steel products in this series are made from high-purity carbon steel, with four mainstream grades that cater to different load-bearing requirements, environmental conditions, and regional standard compliance, ensuring wide adaptability and consistent performance across global markets.

1. SS400 Carbon Steel Equal Angle Steel

SS400 is a standard general-purpose carbon structural steel grade complying with Japanese Industrial Standards (JIS G3101), where "SS" denotes Steel Structure and 400 indicates a minimum tensile strength of 400 MPa. With a minimum yield strength of 235 MPa, it balances excellent ductility, weldability, and formability, making it suitable for light to medium-duty structural applications. The 50×50×5 mm规格 of SS400 equal angle steel offers reliable load-bearing capacity, ideal for general frameworks, support brackets, and industrial fabrication, widely adopted in Asian markets adhering to JIS standards.

2. Q235 Carbon Steel Equal Angle Steel

Q235 is a classic general-purpose mild carbon structural steel grade complying with Chinese National Standard (GB/T 700), where "Q" denotes yield strength and 235 represents a minimum yield strength of 235 MPa. Characterized by low carbon content (0.12%-0.20%), Q235 exhibits exceptional weldability, cuttability, and formability, requiring no complex heat treatment for routine use. The 50×50×5 mm规格 is a widely used size for this grade, suitable for light to medium-duty applications such as building frameworks, warehouse shelves, and auxiliary supports, serving as a cost-effective staple in global civil and industrial construction.

3. Q345c Carbon Steel Equal Angle Steel

Q345c is a high-strength low-alloy carbon structural steel grade complying with Chinese National Standard (GB/T 1591), with a minimum yield strength of 345 MPa-significantly higher than Q235 and SS400. The suffix "c" indicates compliance with low-temperature (-20℃) impact toughness requirements, enhancing its resistance to dynamic loads and brittle fracture in harsh environments. The 50×50×5 mm规格 of Q345c equal angle steel delivers superior load-bearing capacity, ideal for medium to heavy-duty structural applications such as high-rise building supports, industrial frameworks, and bridge auxiliary components.

4. S235jr Carbon Steel Equal Angle Steel

S235jr is a mild carbon structural steel grade complying with European Standards (EN 10025), where "S" denotes Structural Steel, 235 represents a minimum yield strength of 235 MPa, and "jr" indicates room-temperature impact toughness. It features a tensile strength range of 360-510 MPa, combining excellent ductility, weldability, and cost-efficiency. The 50×50×5 mm规格 of S235jr equal angle steel is widely used in European and global projects adhering to EN standards, suitable for general structural applications, including building frameworks, roof trusses, and mechanical equipment bases.

Fixed Specification: 50×50×5 mm Equal Angle Steel

A key highlight of this product is its standardized 50×50×5 mm equal leg specification, meticulously engineered to optimize load-bearing efficiency and structural stability. The symmetrical 90-degree L-shaped cross-section features two identical 50mm legs and a 5mm uniform thickness, striking an optimal balance between material weight and load-bearing capacity. This specific dimension is carefully calibrated to distribute stress evenly across the entire cross-section, preventing stress concentration and enhancing the angle bar's ability to withstand compressive, tensile, and shear forces-essential for diverse structural applications.

The 50×50×5 mm size is strictly controlled during production, with precise tolerance control (within ±0.1mm for leg length and thickness) to ensure dimensional accuracy and seamless compatibility with other structural components. This standardization simplifies bulk procurement, on-site assembly, and replacement, making it a preferred choice for large-scale projects where consistency and reliability are paramount.

Hot-Rolled Processing & Quality Assurance

All 50×50×5 mm equal angle steel products are manufactured via advanced hot-rolling technology, a process optimized for structural steel components. High-quality continuous-cast carbon steel billets are heated to high temperatures (above 1000℃)-above the material's recrystallization point-followed by multi-pass precision rolling to form the precise 50×50×5 mm L-shaped cross-section. The hot-rolling process refines the material's microstructure, enhances its toughness and ductility, and ensures a dense internal structure capable of withstanding diverse structural stresses.

Every batch undergoes comprehensive quality testing, including chemical composition analysis, mechanical property verification (yield strength, tensile strength, impact toughness), and dimensional accuracy measurement. The finished product features a clean, uniform surface with minimal oxide scale, free from visible cracks, scratches, or mechanical damages, ensuring optimal weldability and structural integrity. Strict quality control measures ensure that each angle bar meets the highest industrial standards for hot-rolled carbon steel.

Key Product Features & Competitive Advantages

Multi-Grade Versatility: SS400, Q235, Q345c, S235jr grades cover light to heavy-duty load requirements, compatible with JIS, GB, and EN standards, providing flexible material choices for global projects.

Fixed Standard Specification: 50×50×5 mm equal leg design with precise dimensional accuracy, optimizing stress distribution and load-bearing efficiency for diverse applications.

Advanced Hot-Rolled Craftsmanship: Hot-rolling enhances material toughness, ductility, and structural integrity, ensuring reliable performance in harsh and high-stress scenarios.

Superior Processability: All grades exhibit excellent weldability, cuttability, and formability, facilitating efficient on-site fabrication, assembly, and customization.

Durable & Reliable: High-purity carbon steel and strict quality control ensure dense internal structure, fatigue resistance, and long-term durability in industrial and construction environments.

Standardized & Interchangeable: Fixed 50×50×5 mm size ensures seamless compatibility with other structural components, simplifying bulk procurement and on-site installation.

Main Application Scenarios

This hot-rolled 50×50×5 mm equal angle steel (SS400/Q235/Q345c/S235jr) is extensively applied in industrial, construction, and manufacturing fields. Q235 and SS400 grades are ideal for light to medium-duty applications such as building frameworks, warehouse shelves, and auxiliary supports; Q345c for medium to heavy-duty projects like high-rise building supports and bridge components; S235jr for European-standard projects including roof trusses and mechanical equipment bases. Specific applications include industrial workshops, commercial buildings, warehouse constructions, pipeline supports, transmission tower auxiliary components, and general hardware fabrication. With its fixed standard specification, multi-grade options, and reliable performance, this equal angle steel serves as an indispensable structural material for global engineering and fabrication projects.