Hot rolled A588 grade A carbon steel plate sheet main application

Classification of A588 grade A carbon steel plate sheet, steel plate, including strip steel: 1. Classified by thickness: (1) thin plate (2) medium plate (3) thick plate (4) extra thick plate 2. Classification by production method: (1) hot rolled steel plate (2) cold rolled steel plate 3. Classification according to surface characteristics: (1) galvanized sheet (hot galvanized sheet, electro galvanized sheet) (2) tin plate (3) composite steel plate (4) color coated steel plate 4. Classification by use: (1) bridge steel plate (2) boiler steel plate (3) shipbuilding steel plate (4) armored steel plate (5) automobile steel plate (6) roof steel plate (7) structural steel plate (8) electrical steel plate (silicon steel sheet) (9) spring steel plate (10) others

The toughness index of Q345B steel should be tested by impact test at 20 ℃. Although the strength of Q345B steel and Q345A steel are the same, the S / P control of Q345B steel is more strict, and the ambient temperatures of A588 grade A carbon steel plate sheet, Q345B steel and Q345A steel are different. The cold impact test refers to the impact test at a certain temperature to obtain the energy consumed by punching the specimen. The more energy consumed, the higher the toughness of the material. Q345A is not subject to impact test. So Q345B steel is better than Q345A steel.

The head of the National Development and Reform Commission, He Lifeng, chaired a special meeting of the Office of the Leading Group for the Development of the Yangtze River Economic Belt. The meeting emphasized that the Yangtze River Economic Belt is the center of gravity and vitality of China's economy, and is of great significance to the overall economic and social development of the country. At present, we must focus on four tasks. The first is to make every effort to resume work and achieve production. The second is to make every effort to promote ecological environmental protection and restoration. The third is to strengthen project reserve work. The fourth is to improve the planning guarantee system.