Angle bar, also known as “L-bar”, “L-bracket” or “angle iron, is a metal in the form of a right angle.Steel angle bar is the most widely used structural steel by the construction industry because of its very economical cost. Structural steel angles are manufactured by rolling pre-heated blooms to form an angle shape. ISO/CE certified. Contact us for quotes!

Q235B steel angles are a widely used carbon structural steel profile manufactured according to the Chinese GB/T 706 standard. Characterized by a minimum yield strength of 235 MPa and tensile strength ranging between 370–500 MPa, this grade offers balanced weldability, machinability, and ductility. While equivalent to international grades such as S235JR (EN), A36 (ASTM), and SS400 (JIS), Q235B angles are cost-effective and globally exported, particularly across Asia, Africa, and Latin America. Surface treatments (e.g., galvanizing) are often applied to improve corrosion resistance.

Q355B steel angles are low-alloy high-strength structural profiles manufactured under the Chinese GB/T standard, characterized by a minimum yield strength of 355 MPa and tensile strength ranging from 470 to 630 MPa. These angles—available in equal-leg and unequal-leg variants—exhibit enhanced weldability, impact toughness (≥27J at room temperature), and elongation (≥21%). Equivalent to grades like S355JR (EN) and A572 Gr.50 (ASTM), Q355B angles balance cost efficiency with structural reliability in global infrastructure projects.

ASTM A36 steel angles are widely used carbon structural profiles manufactured under the ASTM A36/A36M standard, featuring a minimum yield strength of 250 MPa and tensile strength ranging from 400 to 550 MPa. With low carbon content (≤0.25%) and balanced manganese (0.80–1.20%), they offer excellent weldability, machinability, and ductility (elongation ≥20–23%). Commonly supplied in equal-leg or unequal-leg configurations with standard lengths of 6–12 meters, these hot-rolled angles are applied in building frames, bridges, machinery bases, and support structures due to their cost-effectiveness and reliability in static-load environments. Surface treatments like galvanizing (ASTM A123) enhance corrosion resistance for outdoor use .

ASTM A572 Gr.50 steel angles are high-strength low-alloy (HSLA) structural profiles manufactured under the ASTM A572/A572M standard, featuring a minimum yield strength of 345 MPa (50 ksi for thickness ≤16 mm) and tensile strength ranging from 490 to 600 MPa. Enhanced with niobium-vanadium microalloying, they offer superior weldability, formability, and toughness (0°C Charpy impact: ≥45 J) compared to basic carbon steels like A36. Supplied in hot-rolled equal/unequal-leg configurations, these angles are widely used in high-load structures such as bridges, building frames, crane booms, and industrial equipment due to their optimal strength-to-weight ratio.

ASTM A588 steel angles are high-strength low-alloy (HSLA) structural profiles manufactured under the ASTM A588/A588M standard, featuring a minimum yield strength of 345 MPa (50 ksi) and enhanced atmospheric corrosion resistance due to alloying elements like copper, chromium, and nickel, which form a protective oxide layer when exposed to weather. These hot-rolled angles—available in grades A, B, C, and K—exhibit tensile strengths of 435–485 MPa, elongation ≥18–21%, and are suitable for unpainted applications in bridges, building frames, transmission towers, and industrial structures where weight reduction and long-term durability are critical.

ASTM A992 steel angles are carbon structural profiles manufactured under the ASTM A992/A992M standard, featuring a minimum yield strength of 250 MPa (thickness ≤200 mm) and tensile strength ranging from 400 to 550 MPa, with elongation ≥20% for enhanced ductility. Optimized for building frameworks and bridges, these hot-rolled angles—available in equal-leg and unequal-leg configurations—exhibit excellent weldability and machinability due to controlled carbon (≤0.26%) and manganese (≥0.80%) content.

S235JR steel angles are hot-rolled structural profiles manufactured under the European standard EN 10025-2, characterized by a minimum yield strength of 235 MPa and tensile strength ranging from 360 to 510 MPa . Composed of low-carbon steel, they offer excellent weldability, ductility (elongation ≥18–26%), and room-temperature impact toughness (≥27J for JR grade). Available in equal/unequal-leg configurations, these angles are widely used in building frames, bridges, machinery supports, and infrastructure due to their cost-effectiveness and ease of machining.

S275JR steel angles are hot-rolled structural profiles manufactured under the European standard EN 10025-2, characterized by a minimum yield strength of 275 MPa and tensile strength ranging from 430 to 580 MPa. Composed of low-carbon steel, they offer excellent weldability, ductility, and room-temperature impact toughness. Available in equal-leg and unequal-leg configurations, these angles are widely used in building frames, bridges, machinery supports, and industrial infrastructure due to their cost-effectiveness and ease of machining. Optional surface treatments (e.g., galvanizing) enhance corrosion resistance for demanding applications.

S355JR steel angles are high-strength structural profiles manufactured under the European standard EN 10025-2, featuring a minimum yield strength of 355 MPa and tensile strength ranging from 470 to 630 MPa. Composed of low-alloy steel (C≤0.20%, Mn≤1.60%), they deliver enhanced load-bearing capacity, ductility (elongation ≥22%), and room-temperature impact toughness (≥27J at 20°C for "JR" grade). Available in equal-leg and unequal-leg configurations, these hot-rolled angles are widely used in bridges, industrial frameworks, power transmission towers, and seismic-resistant structures due to their optimal strength-to-weight ratio and weldability.

SS400 Steel Angles are carbon structural steel sections under Japan’s JIS G3101 standard, equivalent to China’s Q235B and ASTM A36. With a minimum yield strength of 245 MPa and tensile strength of 400-510 MPa, they are hot-rolled from low-carbon steel, offering excellent weldability, formability, and cost efficiency. Commonly used in construction, bridges, machinery, and general structural frameworks, SS400 angles provide reliable mechanical performance for static and dynamic loads.

SS540 Steel Angles are high-strength carbon structural steel sections under Japan’s JIS G3101-2015 standard, named for their minimum tensile strength of 540 MPa. Composed of ≤0.30% carbon, ≤1.60% manganese, and controlled phosphorus/sulfur content, they offer a yield strength of ≥400 MPa (for thicknesses <16mm) and tensile strength of ≥540 MPa, with ≥16% elongation in thinner sections. Hot-rolled or controlled-rolled, these angles excel in weldability and formability, making them ideal for heavy structural frameworks, bridges, machinery components, and automotive parts where high strength-to-weight ratios are critical.