... ,petrochemical industry,medical device,building and decoration.Shape: U-channelMaterial Grade:201,202,301,303,304(L),310S,316(L),317 ... ,410,420,430(F),630 etc.Size/Surface:8#-12# Hot rolled ,annealed and pickled finish,also can polish finish if you ... # Welding channel,pickled/polish finish.Length:6 meters,or according to your request.