Steel H-Beams are efficient, economical structural profiles widely used in construction, bridges, and industrial applications. Manufactured through hot-rolling, their H-shaped cross-section provides high strength-to-weight ratios, enabling material savings of 30-40% compared to traditional I-beams. Compliant with international standards (ASTM, EN, JIS) and Chinese GB standards, common grades include Q235, Q345, SS400, and S235JR. With tensile strengths ranging 400-630 MPa, they ensure structural stability in high-rise buildings, machinery, and energy infrastructure, offering excellent weldability and corrosion resistance for long-term durability.

Q235B steel H-beams are hot-rolled carbon structural steel sections widely used in construction and engineering. Conforming to Chinese standards GB/T 700-2006 and GB/T 11263-2017, these H-shaped profiles feature a yield strength of 235 MPa and tensile strength ranging from 375-500 MPa, with chemical composition including ≤0.20% carbon, ≤1.4% manganese, and controlled sulfur/phosphorus content. Their optimized flange-web geometry provides high load-bearing capacity while maintaining lightweight characteristics, making them ideal for building frameworks, bridges, industrial plants, and machinery structures. Q235B H-beams exhibit excellent weldability and machinability, supporting cost-effective fabrication.

Q345B steel H-beams are high-strength low-alloy structural steel sections conforming to China's GB/T1591-2008 standard, offering a balance of mechanical properties and versatility. Composed of carbon (≤0.20%), manganese (≤1.70%), silicon (≤0.50%), and trace alloying elements like niobium, vanadium, and titanium, these H-beams achieve a yield strength of 345MPa (varying with thickness) and tensile strength of 470-630MPa. Their excellent weldability, low-temperature toughness (20℃ impact tested), and adaptability to hot-rolled fabrication make them ideal for heavy-duty applications including bridges, high-rise buildings, industrial frameworks, and machinery components. Widely used in infrastructure projects globally, Q345B H-beams represent a cost-effective solution for structures requiring high load-bearing capacity and durability.

Q390 Steel H-Beams are high-strength low-alloy structural steel sections conforming to China's GB/T 1591-2018 standard, offering a yield strength of at least 390MPa and tensile strength ranging from 490MPa to 650MPa. Designed with a "low-carbon + microalloying" approach, they incorporate elements like niobium, vanadium, and titanium to achieve fine grain strengthening and precipitation hardening, balancing strength and toughness. These H-beams exhibit excellent weldability, cold formability, and low-temperature toughness, with impact resistance down to -40℃ for Grade E variants. Widely used in heavy-duty applications such as bridges, high-rise buildings, offshore wind turbines, and pressure vessels, Q390 H-beams enable structural weight reduction of 10-15% compared to conventional steels while maintaining superior load-bearing capacity and durability in harsh environments.

ASTM A36 Steel H-Beams are versatile carbon structural steel sections conforming to ASTM A36/A36M standards, widely used in construction, bridges, machinery, and marine engineering. With a yield strength of ≥250 MPa and tensile strength ranging from 400-550 MPa, these H-shaped profiles feature low carbon content (≤0.25%) and controlled manganese (0.80-1.20%), ensuring excellent weldability, formability, and impact toughness. Their balanced strength-to-weight ratio makes them ideal for load-bearing structures like building frameworks, bridge girders, and industrial equipment.

ASTM A992 Steel H-Beams are high-strength, low-alloy structural steel sections specified under ASTM A992/A992M, widely used in building frameworks, bridges, and industrial structures. Composed of carbon (0.23% max), manganese (1.35% max), and alloyed with niobium, vanadium, or titanium, these H-beams achieve a minimum yield strength of 50 ksi (345 MPa) and tensile strength of 65 ksi (448 MPa). Designed for superior weldability and atmospheric corrosion resistance, they feature a fine-grain microstructure that enhances toughness at low temperatures. ASTM A992 H-beams are favored for their cost-effectiveness, dimensional accuracy, and compliance with AISC (American Institute of Steel Construction) standards, making them ideal for seismic-resistant designs and heavy-load applications.

ASTM A572 Grade 50 Steel H-Beams are high-strength low-alloy (HSLA) structural sections conforming to ASTM A572/A572M standards, widely used in heavy construction, bridges, and infrastructure. With a minimum yield strength of 50 ksi (345 MPa) and tensile strength up to 65 ksi (450 MPa), these H-shaped profiles incorporate alloy elements like niobium and vanadium for enhanced strength-to-weight ratio. Their low carbon content (≤0.23%) ensures excellent weldability and formability, while improved toughness makes them suitable for cold climates. ASTM A572 Grade 50 H-beams are preferred for seismic-resistant structures, high-rise buildings, and heavy machinery due to their durability and cost efficiency. They meet international standards like EN 10025-2 S355, offering global compatibility for demanding engineering projects.

S235JR Steel H-Beams are non-alloy structural steel sections conforming to EN 10025-2:2004, widely used in construction, bridges, and machinery frameworks. With a nominal yield strength of 235 MPa and tensile strength of 360-510 MPa, they offer excellent weldability, machinability, and cold-forming properties due to their low carbon content (≤0.17%) and controlled manganese (≤1.40%), sulfur (≤0.045%), and phosphorus (≤0.045%) levels. These H-beams feature a balanced combination of strength and ductility, making them suitable for non-critical structural applications where moderate load-bearing capacity is required. Their cost-effectiveness, compatibility with standard fabrication techniques, and compliance with CE marking requirements have established S235JR as a preferred choice for general-purpose engineering projects across Europe and global markets.

S275JR Steel H-Beams are non-alloy structural steel sections conforming to European standard EN 10025-2, widely used in construction, bridges, machinery, and energy infrastructure. With a minimum yield strength of 275 MPa and tensile strength ranging from 410-580 MPa, these H-shaped profiles feature low carbon content (≤0.21%) and controlled manganese (≤1.50%), ensuring excellent weldability and formability. Their chemical composition limits phosphorus and sulfur to ≤0.035%, enhancing toughness, while copper (≤0.55%) improves atmospheric corrosion resistance. S275JR H-beams are commonly delivered in hot-rolled, controlled-rolled, or normalized states, supporting cost-effective fabrication through cutting, bending, and welding without preheating for thicknesses ≤30mm.

S355JR/J0/J2 Steel H-Beams are low-alloy high-strength structural steel sections conforming to EN 10025-2, widely used in construction, bridges, and heavy machinery. With a nominal yield strength of 355 MPa and tensile strength ranging from 470-630 MPa, these H-beams offer excellent weldability, cold-forming properties, and impact toughness at different temperatures (20℃ for JR, 0℃ for J0, and -20℃ for J2). Their chemical composition includes ≤0.22% carbon, ≤1.60% manganese, and controlled phosphorus/sulfur levels (≤0.025%), ensuring reliable performance in demanding environments. S355JR/J0/J2 H-beams are favored for their cost-effectiveness, dimensional accuracy, and compliance with CE marking requirements, making them ideal for seismic-resistant designs, offshore structures, and general engineering projects across Europe and global markets.

SS400 Steel H-Beams are carbon structural steel sections conforming to Japanese standard JIS G3101, widely used in construction, bridges, machinery, and industrial frameworks. With a minimum yield strength of 245 MPa and tensile strength ranging from 400-510 MPa, these H-shaped profiles feature low carbon content (≤0.21%) and manganese (≤1.50%), ensuring excellent weldability and formability. Controlled sulfur (≤0.050%) and phosphorus (≤0.050%) content enhances toughness, while hot-rolled delivery states support cost-effective fabrication through cutting, bending, and welding without preheating for thin sections.

SM490 Steel H-Beams are high-strength low-alloy structural sections conforming to Japanese standard JIS G3106, widely used in heavy construction, bridges, machinery, and marine engineering. With a minimum yield strength of 325 MPa and tensile strength up to 630 MPa, these H-shaped profiles feature optimized carbon (0.15-0.22%) and manganese (0.90-1.65%) content, supplemented by microalloying elements like niobium/vanadium for enhanced strength-toughness balance. Their excellent weldability (Ceq≤0.43%) and formability support cost-effective fabrication through multiple welding methods, while 0℃ impact toughness ≥27 J ensures reliability in cold climates.