... 2.Thickness :1mm to 12mm 3.Material :black steel ,galvanized steel ,stainless steel C Channel C steel ChannelProduct: C channel ,steel channelStandard:ASTM ,JIS ,DIN,ENMaterial: Q195,Q235 ... ,200mmLength:Any lengthShipment time: Within 14 working days Specification of C Channel: Model SizeTHeoretical Weighth X b X a xt h ...