Hot rolled steel coil. Q345 grade steel coil Grades description: Q235, SS400, Q345,SPHC, astm A36, ... type.Specification1)thickness:1.8mm-20.6mm2)width:1250mm/1500mm3)grade:Q345B4)standard:GB The hot rolled coil, which is mainly ... , bridges, architecture, mechanery, pressure vessel and other manufacturing industries Q345 grade steel coil low alloy carbon steel