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The equivalent material of GB/T700 Q275 carbon steel and low alloy steel coil is S275JR steel coil. S275JR steel coil is a general-purpose carbon structural steel. It is also a carbon structural steel and low alloy structural steel used in engineering steel and structural steel, which is usually not heat treated. 

A709 steel coil is high-strength alloy steel coil that is widely used in construction, bridges, ships, automobiles and other fields. The chemical composition of A709 steel coil mainly includes carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel and other elements. The carbon content is relatively high, generally between 0.22%-0.29%.

A656 steel coil is made of a high-strength low-alloy steel commonly used in structural applications where light weight and good formability are essential. A656 steel coils are manufactured in grades of 50, 60, 70 and 80 to meet the specified yield point.

A633 steel has four grades of A, C, D, and E. The thickness of grade C can reach 4 inches and the thickness of grade E can reach 6 inches. ASTM A633 steel specification is based on the standard specification for standardized high-strength low-alloy structural steel coil, which requires high notch toughness under low temperature conditions.

ASTM A588 steel is sorted into Class A, Class B, Class C, and Class K. The ASTM A588 steel specification is based on the standard specification for high-strength low-alloy structural steel with a lower yield point of up to 50ksi for applications requiring high strength and corrosion resistance.

A573/A573M steel has grades including 58, 65 and 70. The coil is suitable for structural grade carbon-manganese-silicon steel in 3 tensile strength ranges. ASTM A573/A573M steel coils are mainly used to improve notch toughness at room temperature.

ASTM A514 steel is available in several grades. And they have the same mechanical properties. ASTM A514 steel coils are conventionally quenched and tempered steel with high yield strength, weldability and toughness. ASTM A514 steel is a special high-strength steel, mainly used as building structural steel.

ASTM A283 cold rolled steel coil has low and medium tensile strength. The ASTM A283 steel specification covers four structural quality grades of mild steel, grades A, B, C, and D, for general application.

A36 is a carbon structural steel coil whose chemical composition and mechanical properties strictly conform to American ASTM standards. Good mechanical properties, welding performance and corrosion resistance are basically why they are widely used in construction, bridges, machinery manufacturing and other fields.