... Flat Bar Thickness:4mm-50mm Width:15mm-130mm Length:4-10M Material:Q235,45#,16Mn,40Cr etc. Tianjin Anxintongda Steel Pipe Co., Ltd ... : construction structure, machine equipment parts, hardware and tools, staircase, bridge, viaduct, fences, etc Hot Rolled Steel Flat Bar Grade:Q235,Q345,etcSize (mm ...