... c section 3.Reasonable design 4.High mechanical strength c type steel1.Convenient in construction and save much time and labor2 ... section,save material4.Size:80*40mm to 350*100mm CommodityC Type SteelStandardGBThickness0.3mm-5mmLength6m or on your requestsMaterialQ195,Q215,Q235,Q345Surface ... TreatmentHot dip galvanized,cold galvanized,pre-galvanizedUsageSteel structure/PurlinPackingBundles c type steel