... SS400,A36 SS400/SS540 hot rolled mild steel JIS standard U Channels Channel steel, U channel section, Hot rolled U channel,Steel U channel barMaterial: SS400, ST37-2, A36, ... Japanese standard size: 50*25*3mm-300*90*13mm American standard size:102*40*3.2-305*80*13mm Channel Steel(Japanese Standard) h( ... :SELINACELL:86-15830565735SKYPE:hbxsd_selina Hot rolled mild steel U Channel Steel Bar S235JR