Steel Structure Building Material Galvanized C Beam/Channel Tangshan Grand Faith Steel Co., Ltd. Base Info Standard:GB, JIS, JIS G3192Perforated:Not PerforatedGrade:Ss400, Q235B,Q345b, S235jr S275jr Description Pre:Seamless ERW Sch 40 80 Carbon Steel Galvanized Steel Pipe Welded 6m Tube Next:M4 M5 CRGO Cold Rolled Grain Oriented Silicon Steel of Magnetic Transformer Ei Iron Core R