Steel Square Bar is a high-quality structural steel product with a solid square cross-section, offering excellent strength, durability, and dimensional accuracy. Made from carbon steel or alloy steel, it features good machinability, weldability, and reliable performance for various industrial applications. Available in different sizes, grades, and surface finishes, Steel Square Bar is widely used in construction, machinery manufacturing, fabrication, engineering projects, and structural components. With strict quality control, stable mechanical properties, and flexible customization options, we supply Steel Square Bar to meet global customers’ requirements for strength, precision, and cost-effective steel solutions.

ASTM A36 Steel Square Bar is a widely used carbon steel product manufactured according to ASTM A36 standards, offering reliable strength, good weldability, and excellent machinability. With consistent dimensions and stable mechanical properties, it is suitable for structural fabrication, machinery parts, frames, supports, and general engineering applications. ASTM A36 Steel Square Bar provides a cost-effective solution for projects requiring durable and versatile steel materials. It can be supplied in hot rolled, cut-to-length, and customized sizes to meet different industrial requirements.

AISI 1018 Steel Square Bar is a low-carbon steel product known for its excellent machinability, good weldability, and balanced mechanical properties. Manufactured according to AISI/SAE 1018 specifications, it provides reliable strength and consistent performance for various industrial applications. With a smooth surface finish and uniform dimensions, AISI 1018 Steel Square Bar is widely used in machining parts, shafts, brackets, fixtures, frames, and general fabrication projects. Its easy processing characteristics and cost-effectiveness make it a popular choice for manufacturers requiring high-quality carbon steel square bars.

SAE 1045 Steel Square Bar is a medium carbon steel product widely used for applications requiring higher strength, hardness, and wear resistance compared with low-carbon steels. Manufactured according to SAE 1045 specifications, it offers excellent machinability, good weldability, and reliable mechanical performance. SAE 1045 Steel Square Bar is commonly applied in machinery components, shafts, gears, bolts, axles, tooling parts, and general engineering fabrication. With uniform dimensions and consistent quality, it provides a durable and cost-effective solution for industrial projects requiring enhanced strength and toughness.

AISI 4140 Alloy Steel Square Bar is a high-strength chromium-molybdenum alloy steel product designed for applications requiring excellent toughness, fatigue resistance, and wear performance. Manufactured according to AISI 4140 specifications, it provides superior mechanical properties after heat treatment, including high tensile strength and good hardness. AISI 4140 Alloy Steel Square Bar is widely used for heavy-duty machinery parts, shafts, gears, bolts, molds, automotive components, and engineering applications. With excellent machinability and durability, it is an ideal material choice for demanding industrial projects requiring reliable performance under high stress conditions.

S235JR Carbon Steel Square Bar is a European standard structural steel product widely used for general engineering and fabrication applications. Manufactured according to EN 10025 standards, it offers good weldability, machinability, and reliable mechanical strength. S235JR Carbon Steel Square Bar is commonly applied in construction structures, machinery components, frames, supports, brackets, and industrial fabrication projects. With consistent dimensions, excellent versatility, and cost-effective performance, it is an ideal choice for customers requiring dependable carbon steel square bars for various structural and manufacturing needs.

S355JR Structural Steel Square Bar is a high-strength structural steel product manufactured according to EN 10025 standards, offering excellent strength, toughness, and weldability. Compared with standard carbon steels, S355JR provides higher yield strength and improved load-bearing capacity, making it suitable for demanding structural applications. It is widely used in construction frameworks, machinery components, bridges, industrial equipment, and heavy fabrication projects. With precise dimensions, reliable mechanical properties, and outstanding durability, S355JR Structural Steel Square Bar is an ideal choice for projects requiring strong and dependable steel materials.

S45C Carbon Steel Square Bar is a Japanese standard medium carbon steel product known for its high strength, good hardness, and excellent machinability. Manufactured according to JIS standards, S45C provides a balanced combination of toughness, wear resistance, and mechanical performance, making it suitable for various engineering applications. S45C Carbon Steel Square Bar is widely used in machinery parts, shafts, gears, molds, automotive components, and precision fabrication. With consistent quality, accurate dimensions, and reliable performance, it is a popular choice for customers requiring durable carbon steel materials for industrial manufacturing.

4340 High Strength Steel Square Bar is a premium nickel-chromium-molybdenum alloy steel product designed for applications requiring exceptional strength, toughness, and fatigue resistance. Manufactured according to AISI/SAE 4340 specifications, it offers excellent hardenability, wear resistance, and reliable performance under high stress conditions. 4340 High Strength Steel Square Bar is widely used in aerospace components, heavy machinery parts, automotive applications, gears, shafts, and industrial equipment. With superior mechanical properties and excellent heat treatment capability, it provides a durable solution for demanding engineering projects requiring maximum strength and long service life.

Q235B Steel Square Bar is a widely used Chinese standard carbon structural steel product known for its good strength, excellent weldability, and cost-effective performance. Manufactured according to GB/T standards, Q235B provides reliable mechanical properties and good plasticity, making it suitable for various construction and fabrication applications. Q235B Steel Square Bar is commonly used in structural frames, machinery components, brackets, supports, steel structures, and general engineering projects. With accurate dimensions, stable quality, and easy processing characteristics, it is an economical choice for customers requiring versatile carbon steel square bars.

Q355B Steel Square Bar is a high-strength low-alloy structural steel product widely used in industrial and engineering applications. Manufactured according to Chinese GB/T standards, Q355B offers higher yield strength, excellent toughness, and good weldability compared with ordinary carbon steels such as Q235B. Q355B Steel Square Bar is commonly applied in heavy structures, machinery components, bridges, construction frames, equipment supports, and fabrication projects requiring enhanced load-bearing capacity. With reliable mechanical performance, precise dimensions, and excellent durability, it provides an efficient solution for demanding structural applications.

SS400 JIS Steel Square Bar is a widely used Japanese standard carbon structural steel product known for its reliable strength, excellent weldability, and good machinability. Manufactured according to JIS G3101 standards, SS400 provides stable mechanical properties and versatile performance for various industrial applications. SS400 JIS Steel Square Bar is commonly used in construction structures, machinery parts, frames, supports, brackets, and general fabrication projects. With accurate dimensions, consistent quality, and cost-effective performance, it is an ideal choice for customers requiring dependable structural steel square bars for engineering and manufacturing applications.