Steel structure workshop steel color plate anticorrosion construction standard
Requirements for anti-corrosion treatment of steel color plates in steel structure workshops: 1. The surface of the steel color plate on the roof of the steel structure workshop should be flat, and the welding slag, burr, rust, oil, etc. should be cleaned before construction; 2. The treatment method for the surface of the roof steel color plate of the steel structure workshop can be derusted by spraying or projecting, and derusting by hand and power tools; 3. The level of rust removal by spraying or projecting shall meet the following requirements: 1Sa1 level: the steel surface should be free of visible grease and dirt, and free of scale, rust and paint coatings that are not firmly attached; 2Sa2 level: There should be no visible grease and dirt on the surface of the steel, and the attachments such as scale, rust and paint coating have been basically removed, and the residues should be firm and reliable; 3Sa2 grade: There should be no visible grease, dirt, scale, rust and paint