GB/T 713-2023 is a Chinese national standard for steel plates used in boilers and pressure vessels.The standard includes steel grades such as Q245R, Q345R, 13MnNiMoR, etc.
13MnNiMoR is a kind of low-alloy high-strength steel plate for boilers and pressure vessels, specified in the Chinese national standard GB/T 713 (current latest version: GB/T 713-2014 Steel Plates for Boilers and Pressure Vessels).
GB713 Q345R is a Chinese standard boiler and pressure vessel steel plate, widely used in the manufacturing of boilers, pressure vessels, and other high-stress equipment.
Q245R is a Chinese standard boiler and pressure vessel steel plate, commonly used in the manufacturing of boilers, pressure vessels, and other high-temperature and high-pressure equipment.