1.Product name: U beam steel 2.Size:50-320mm 3.Standards: GB,JIS, ... /SS540 hot rolled mild steel JIS standard U Channels Mild steel U channel, U steel, Hot rolled U channelMaterial: SS400, ST37-2, A36, S235JR ... CO.,LTDATTN:SELINACELL:86-15830565735 GB Standard hot rolled mild U-shape steel Q235,Q345