Steel channel Steel grade:Q195 -235;Q235B Standard:GB/T700 - 1988 Length:5.8m - 12m Competitive price Steel channelSteel grade:Q195 -235;Q235BStandard:GB/T700 - 1988Length:5.8m - 12mType:5#- 36#Height:50mm - 320mmThckness:2mm-12mmWidth:20mm - 700mmSurface treatment:Pre-painted,Zinc coated,Chormated,unoiled,oiled