ASTM A36/A36M
Carbon structural steel plate
Steel Grades: A36
Widely used in steel structural frames of industrial and civil buildings, factory and warehouse skeletons, platforms and stairs, as well as secondary components of bridges; also commonly found in general manufacturing fields such as machine equipment bases, supports, and tank and container shells. With its moderate strength and good cutting and welding performance, it is often used as the basic material for bolted or welded structures, and is suitable for cost-sensitive load-bearing and non-load
ASTM A283/A283M
Low-pressure and general-purpose carbon steel plates
Steel Grades: Gr.A, Gr.B, Gr.C, Gr.D
Commonly used for the shells and base plates of atmospheric pressure storage tanks, gas tanks, silos, and storage containers, as well as auxiliary components of noncritical pressure vessels; also widely used in general steel structural components, equipment shells, support base plates, and platforms. Due to its moderate strength, ease of cutting, forming, and welding, it is suitable for load-bearing and enclosure structures with low loads and cost considerations, making it an economical and prac
ASTM A572/A572M
High-strength low-alloy niobium-vanadium structural steel
Steel Grades: Gr.42, Gr.50, Gr.55, Gr.60, Gr.65
Widely used in bridge main beams and steel structure workshops, high-rise building frames, as well as high load-bearing components such as lifting equipment, power transmission towers, and engineering machinery; also used in truck chassis, beams, and heavy equipment structural components. With its high strength and good weldability, it allows for a reduction in cross-section and self-weight under the same load, making it suitable for bridges, buildings, and mechanical structures that require bot
ASTM A529/A529M
High-strength carbon manganese structural steel
Steel Grades: Gr.50, Gr.55
It is commonly used in beams, columns, and frames of building steel structures, bridge components, and load-bearing structural components of general machinery; it is also suitable for components requiring high strength, such as purlins, supports, and connecting plates. Thanks to the high strength and good welding and bolting performance of carbon manganese steel, lighter cross-sections can be selected when loads are similar, making it suitable for small to medium-sized steel structure projects t
ASTM A709/A709M
Structural steel for bridges
Steel Grades: Gr.36, Gr.50, Gr.50S, Gr.HPS 50W, Gr.HPS 70W, Gr.100, Gr.100W, Gr.HPS 100W
It is mainly used for the main beams, deck systems, bearings, and various load-bearing components of highway and railway bridges; the weather resistance rating can be used for exposed bridge structures that require no painting or minimal maintenance. With its classification by strength and toughness, and the inclusion of high-performance and weather-resistant varieties, it can be selected based on span, load, and environment, making it suitable for bridge projects with high requirements for safe
EN 10025-2
Hot-rolled non-alloy structural steel products
Steel Grades: S185, S235JR, S235J0, S235J2, S275JR, S275J0, S275J2, S355JR, S355J0, S355J2, S355K2, E295, E335, E360
Widely used in steel structural frames of factories and multi-story buildings, bridges, engineering machinery and equipment bases, as well as general structural components such as supports, platforms, and connectors. Grades are classified according to strength and impact toughness, allowing for flexible selection based on stress and operating temperature; S235 and S355 are the most commonly used. With excellent welding and processing properties, they are suitable for various conventional steel s
EN 10025-3
Normalized weldable fine-grained structural steel
Steel Grades: S275N, S275NL, S355N, S355NL, S420N, S420NL, S460N, S460NL
Commonly used in welded steel structures, equipment and components operating under cryogenic conditions, pressure vessel auxiliary structures, and offshore platform components; also suitable for bridges, heavy machinery, and other applications requiring high toughness. The NL series offers superior cryogenic impact performance, making it suitable for cold environments. Its fine grain structure provides a combination of high toughness and good weldability, making it ideal for load-bearing structu
EN 10025-4
Thermomechanically rolled weldable fine-grained structural steel
Steel Grades: S275M, S275ML, S355M, S355ML, S420M, S420ML, S460M, S460ML, S500M, S500ML
Widely used in load-bearing components of high-strength lightweight steel structures, long-span bridges, high-rise and large-space buildings, wind turbine towers, and engineering machinery; the ML series is suitable for low-temperature environments. With its excellent weldability and high toughness due to its low carbon equivalent, it reduces preheating, improves construction efficiency, and reduces structural weight under the same load, making it suitable for modern structural engineering proje
EN 10025-6
Quenched and tempered high-strength structural steel
Steel Grades: S460Q, S460QL, S460QL1, S500Q, S500QL, S550Q, S550QL, S620Q, S620QL, S690Q, S690QL, S690QL1, S890Q, S890QL, S960Q, S960QL
Primarily used in heavy-duty construction machinery, crane booms and jibs, high-stress components in mining and engineering equipment, as well as pressure vessels and offshore platform structures; also used in structural components bearing large concentrated loads. With its high yield strength, it allows for significant reduction in cross-section and weight, making the QL series suitable for cryogenic conditions. Ideal for heavy equipment and structures with stringent requirements for high stren
JIS G3101
Rolled steel for general structures
Steel Grades: SS330, SS400, SS490, SS540
Widely used in general building structures, mechanical equipment frames, secondary bridge components, factory and warehouse skeletons, and other general steel structures, with SS400 being the most common. It is also used for supports, bases, connectors, and platforms. Due to its moderate strength, good formability and cutting performance, and economical price, it is suitable for conventional structures and manufacturing applications where bolting or riveting is the primary method and weldability
JIS G3106
Rolled steel for welded structures
Steel Grades: SM400A, SM400B, SM400C, SM490A, SM490B, SM490C, SM490YA, SM490YB, SM520B, SM520C, SM570
Widely used in load-bearing components such as bridges, ships and marine structures, storage tanks and pressure vessels, containers, engineering machinery, and welded building structures. Grades are classified according to strength and impact toughness, allowing selection based on stress and operating temperature; Grade C offers better low-temperature performance. With excellent weldability and a combination of strength and toughness, it is suitable for structural engineering projects that heavi
JIS G3136
Rolled steel for building structures
Steel Grades: SN400A, SN400B, SN400C, SN490A, SN490B, SN490C, SN490Y, SN520B, SN520C
Primarily used in steel structures of high-rise and super high-rise buildings, beams, columns, and joints of seismic-resistant frames, large-span buildings, and heavy-duty factories—load-bearing components requiring seismic performance. Grade C exhibits thickness-direction properties, making it suitable for important joints and thick plate connections. With its controlled yield-to-tensile ratio and good plasticity and weldability, it can achieve stable plastic energy dissipation under strong ear
