... .400 series 2.Size: many size according 3.Surface:cold polished,pickled,et 1.stainless steel channel ... bar 2.Grade: 200.300.400 series 3.Size: many size ... according 4.Surface:cold polished,pickled,etChannel Steel BarPlace of ... : 6m or 12m, depending on your requirements.3) Steel grade: EN ST37-2, ST52, S235JR, S355JRJIS SS330 ...