A36 Ss400/Q195/20X20mm-200X200mm/Equal/Unequal/Hot Rolled/Cold Rolled/Carbon Iron Angle Steel Bar

A36, SS400, and Q195 carbon iron angle steel bars, available in equal and unequal types with both hot-rolled and cold-rolled processes, form a comprehensive and high-performance product series covering a wide dimensional range of 20X20mm to 200X200mm. As essential structural components in industrial and civil fields, these carbon iron angle steels are renowned for their tailored mechanical properties, flexible specification options, and reliable structural stability, meeting the diverse needs of various construction, machinery, and infrastructure projects.

The product series features three premium carbon iron grades, each with distinct performance characteristics to adapt to different application scenarios. A36, a globally recognized ASTM standard carbon structural steel, exhibits a minimum yield strength of 250 MPa and excellent weldability, ductility, and formability. Its balanced strength and workability make it a preferred choice for heavy-duty structural applications such as building frames, bridges, and machinery bases. SS400, a Japanese industrial standard (JIS G 3101) carbon steel, boasts a minimum yield strength of 400 MPa, offering superior load-bearing capacity and toughness. It is widely used in high-strength structural components, including industrial platforms, conveyor supports, and offshore auxiliary structures. Q195, a Chinese national standard (GB/T 700) low-carbon steel with a minimum yield strength of 195 MPa, excels in formability and machinability, making it ideal for light-weight structural parts, decorative components, and auxiliary machinery parts that require easy processing.

Both hot-rolled and cold-rolled processes are adopted in the production of these angle steel bars, each contributing unique advantages to the product performance. Hot-rolled angle steels are manufactured by heating steel billets to high temperatures (above 1000°C) and rolling them into the desired angle cross-sections. This process refines the steel's grain structure, enhancing its toughness and impact resistance, and enables the production of large-size products (up to 200X200mm). Hot-rolled angle steels are suitable for heavy-duty structures and outdoor applications due to their excellent ductility and cost-effectiveness. Cold-rolled angle steels, on the other hand, are processed at room temperature, resulting in higher dimensional accuracy, smoother surface finish, and improved hardness compared to hot-rolled counterparts. They are ideal for precision structural components, electronic equipment frames, and decorative applications where surface quality and dimensional precision are critical.

The product series covers both equal and unequal angle steels, with a comprehensive dimensional range of 20X20mm to 200X200mm to meet diverse structural design requirements. Equal angle steels (e.g., 50X50X5mm, 100X100X8mm) feature identical leg lengths, providing symmetrical load distribution and facilitating uniform force transfer in structural connections, which is essential for roof trusses, floor beams, and wall frames. Unequal angle steels (e.g., 63X40X5mm, 125X80X10mm) have different leg lengths, offering flexible adaptability to asymmetric load conditions and space-constrained environments, making them suitable for bracket supports, frame reinforcements, and machinery accessories. The thickness of the angle steels ranges from 3mm to 24mm, and standard lengths include 6m, 9m, and 12m, with customized lengths available to cater to specific project needs.

All angle steel bars in this series undergo strict quality control procedures to ensure compliance with international and national standards. Quality inspections include chemical composition analysis (to verify the purity and composition of carbon iron), mechanical property testing (tensile strength, yield strength, elongation, impact toughness), and dimensional accuracy inspection (leg length, thickness, right angle deviation, surface flatness). The products fully comply with relevant standards such as ASTM A36 (for A36 grade), JIS G 3101 (for SS400 grade), GB/T 700 (for Q195 grade), GB/T 9787 (for hot-rolled equal/unequal angle steels), and GB/T 9788 (for cold-rolled equal/unequal angle steels).

Practical applications of these carbon iron angle steel bars span across numerous sectors. In construction, they are used in high-rise building frames, large stadiums, bridge structures, and municipal infrastructure; in machinery manufacturing, they serve as key components in mechanical frames, equipment supports, conveyor systems, and agricultural machinery; in industrial engineering, they are applied in industrial platforms, boiler supports, and power transmission towers. The diverse combination of materials, processes, and specifications ensures that these angle steels can adapt to various working conditions, from light-duty decorative applications to heavy-duty load-bearing structures.

To summarize, the A36, SS400, and Q195 carbon iron angle steel bar series, with its comprehensive coverage of equal/unequal types, hot-rolled/cold-rolled processes, and 20X20mm-200X200mm dimensions, represents a versatile and reliable structural material solution. By integrating tailored material properties, advanced processing technologies, and strict quality control, these products effectively meet the multi-faceted demands of modern construction and industrial fields, solidifying their important position in the global structural steel market.