1. For the cleaning of straight seam steel pipes, solvent and emulsion are used to clean the steel surface to remove oil, grease, dust, lubricant and similar organic substances. However, it cannot remove rust, oxide skin, welding flux, etc. on the steel surface, so it is only used as an auxiliary means in anti-corrosion production.
2. Tool rust removal of straight seam steel pipe
Steel wire brush and other tools are mainly used to polish the steel surface to remove loose or cocked oxide skin, rust, welding slag, etc. Rust removal by manual tools can reach Sa2, and that by power tools can reach Sa3. If the steel surface is firmly attached with oxide scale, the rust removal effect of tools is not ideal, and the anchor pattern depth required for anti-corrosion construction cannot be reached
3. Pickling of straight seam steel pipe
Generally, chemical and electrolytic methods are used for pickling. Only chemical pickling is used for pipeline corrosion prevention, which can remove oxide scale, rust and old coating. Sometimes, it can be used as the re treatment after sand blasting. Although chemical cleaning can make the surface reach a certain degree of cleanliness and roughness, its anchor lines are shallow and easy to pollute the environment.
