Structural Steel U Channel for Construction Tangshan Grand Faith Steel Co., Ltd. Base Info Standard:GB, JIS, JIS G3192Perforated:Not PerforatedGrade:Ss400, Q235B,Q345b, S235jr S275jr Description Pre:6mm-20mm Thick Steel Tube SSAW 609 mm Carbon Steel Pipe Helical Seam Spiral Welded Steel Pipe Used for Oil and Gas Pipeline Next:Cold Rolled Grain Oriented Silicon Steel Coil of CRGO Steel Sheet for Transformer From China Supplier R