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The steel-plastic pipe manufacturer said that carbon steel seamless steel pipe needs rust removal brush oil without galvanizing; stainless steel seamless steel pipe does not need rust removal brush oil.
Solvents and emulsifiers are used to clean steel surface in order to remove oil, grease, dust, lubricants and similar organic substances. However, they can not remove rust, oxide scale and welding flux on steel surface, so they are only used as auxiliary means in anti-corrosion production.
2. Tool Rust Removal
Mainly use steel brushes and other tools to grind the steel surface, can remove loose or tilted oxide scale, rust, welding slag and so on. Manual tools can achieve Sa2 level of rust removal, power tools can reach Sa3 level of rust removal. If the steel surface is adhered to a solid oxide scale, the effect of tool rust removal is not ideal, and the depth of anchor lines required for anti-corrosion construction can not be reached.
3. Rust Removal by Spraying (Throwing) Shooting
Spraying (ejection) rust removal is a high-speed rotation of ejection blade driven by high-power motor, which makes the surface of 20 Uniform roughness.
In general, chemical and electrolytic methods are used for pickling treatment. Pipeline corrosion protection only uses chemical pickling, which can remove oxide scales, rust and old coatings. Sometimes it can be used as reprocessing after sandblasting and rust removal. Although chemical cleaning can achieve a certain degree of cleanliness and roughness of the surface, its anchor lines are shallow and easy to pollute the environment.