  - GB/T 19879 Q420GJ Building structural steel plate- GB/T 19879 Q420GJ Building structural steel plate has the characteristics of easy welding, shock resistance, low temperature impact, etc. Q420GJ Building structural steel plate is used in high-rise bu... 
  - ASTM A572 Building Structure Plate- A572 Grade 50 is dual certified to A709 Grade 50. Carbon Steels A709-50 material is stocked primarily in Flat Rolled Products, but is also available to a lesser extent in Structural and Bar Products. ... 
  - ASTM A573 Building Structure Steel Plate- ASTM A573 has three grades. A573 Gr. 58, A573 Gr. 65, A573 Gr. 70.ASTM A573 steel plate is a structural quality steel plate that is used in the manufacture of storage tanks. A573 is fully killed, made... 
  - ASTM A633 Building Structure Steel Plate- We have our own A633 gr A,A633 gr C,A633 gr D steel plate factory and if you need the A633 gr A,A633 gr C,A633 gr D steel plate, we can manufacture for you. If you need the competitive A633 gr A,A633 ... 









