Roofing Sheet, Galvanized Steel, Galvalume Steel manufacturer / supplier in China, offering A992 ASTM A992-18 H400× 400× 13× 21mm H-Beam for High-Rise Building Structures, Ss400 JIS G3192-2008 H250× 250× 9× 14mm H-Beam for Warehouse Rack Systems, S355jr En 10025-2 H300× 300× 10× 15mm H-Beam for Bridge Structural Components and so on.