... Steel grade: SS400B Model type: 75x40, 100x50, 50x20, 125x65, 150x75 Standard: JIS standard U channel specification:U channelItem: ... : Japanese standardSteel grade: SS400BModel type: 75x40, 100x50, 50x20, 125x65, 150x75Length: 6m, 9m, 12m or as your request.U channel ... Steel grade SS400B Model type 75x40, 100x50, 50x20, 125x65, 150x75 Technique Hot rolled u channel Certificate ISO 9001: ...