... :GB,JIS,ASTM,EN,DIN 4.Length:6-12m 5.Grade:Q235,SS400,A36,S235JR SS400/SS540 hot rolled mild steel JIS standard ... Channels Mild steel U channel, U steel, Hot rolled U channelMaterial: SS400, ST37-2, A36, S235JR, Q235, Q345 etc. Standard: GB/JIS/EN/ASTM ... .2-305*80*13mm1.SGS inspection report2.Channel Steel, U channel, Channel for shipment3.Loading pic4.Contact person GB standard U shape channel ...