Steel Structure Gymnasium: 1)Durable for 15 years at least 2) ... easy to install Professional and brilliant design, processing and installation of Steel Constructions, like Steel Structural Stadiums, can be provided for you. Customer's ... and efficient platforms etc., are all based on Steel Constructions. NameSteel Structure GymnasiumMaterialsHot Galvanised Steel, C Purlin, H Beam, Sandwich panel, etc. ...