... structure port city. 1. Item Name: Steel Grid/meshy/net/ structure for Fair 2. Steel Material: Q235B and Q345B3. ... : fast construction, easy installation, stable structure, earthquake proofing, energy conserving and environment protection.Steel structure workshop included the main ... door and windowsF. We also have so many accessories, for example, steel bracket, bolts, self-drilling screw, rivet, ...