Prefabrication Structural Steel Welded steel structure h beamSpecifications:1)Material grade:GBstandard Q345(S355JR) or Q235(S235JR)2)Size: as per clie
Galvanized Stainless Steel Structural Welded steel structure h beamSpecifications:1)Material grade:GBstandard Q345(S355JR) or Q235(S235JR)2)Size: as per clie