... Q345B/ s355jr /astm a572 gr 50 High Strength Low Alloy Steel Coil/Sheet/Plate1)Standards: A36/SS400/Q235/Q345/S45C / ... -3, SS400 according to JIS standardS235JR according to EN standardLow alloy steel: Q295-345 (Grand A-E), S275JR, S355JR, St52-32 ... :Riveted,bolted,or welded construction of bridges and building,and for general structural purposesHigh Strength Low Alloy Steel Q345B/ s355jr /astm a572 ...