Stainless Steel Channel Size:6# -20# Surface:Pickled/polish finish. Certificate:ISO9001:2000 SGS. ... ,316(L),317,321,410,420,430(F),630 etc.Size/Surface:8#-12# Hot rolled ,annealed and pickled finish,also ... can polish finish if you need. 6#,14#-20# Welding channel,pickled/polish finish.Length:6 meters,or according to your ...