GB / JIS Standard Hot Rolled Coil SS400 Q235 Q345B 1.2mm GB , JIS Standard SS400 Q235 Q345B Hot Rolled Steel Coils 1.2mm 20mm Thickness . Description: Hot rolling is a mill process which involves rolling the steel at a high temperature (typically at a temperature over 1700176; F), which is above the steel’s recrystallization temperature.
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