ASTM A992/A992M equivalent to EN 10025 S355J2,Australian AS/NZS 3678: Grade 350 L20; Canadian G40.,In China, the corresponding national standard material is GB/T 1591-2018 High Strength Low Alloy Structural Steel. This standard was released in 2018, replacing the original GB/T 1591-2008 standard. Compared with ASTM A992, the GB/T 1591-2018 standard has more steel strength grades, including Q345B, Q345C, Q345D, Q345E, Q390B, Q390C, Q390D, Q420B, Q420C, Q420D, Q460C, Q460D, Q460E, etc.