Because of the large quality of spiral pipe, it must be stacked outdoors, but to avoid sunshine and rain, so the problem has been plagued by the storage time and conditions of spiral pipe. Therefore, we need to fully understand the anti-rust of spiral steel pipe.


Steel brush and other tools are mainly used to grind the steel surface. The cleaning and preheating of spiral steel pipe can remove loose or inclined oxides, rust, welding slag and so on. Manual tools can achieve Sa2 level anti-rust, electric tools can achieve Sa3 level anti-rust. If the steel surface is adhered to solid oxide scale, the anti-rust effect of tools is not ideal, and the depth of anchorage pattern required for anti-corrosion construction is insufficient. pickling


Use solvent, emulsion to wash low pressure fluid to transport the surface of welded steel pipe, so as to remove oil, grease, dust, lubricants and similar organic matters, but it can not remove rust, oxidation, welding and anti corrosion production on steel surface as auxiliary means only.


Generally, chemical and electrolytic methods are used for pickling treatment. Only chemical pickling can remove oxides, rust and old coatings. Sometimes it can be used as reprocessing after blasting. Chemical cleaning can achieve a certain degree of cleanliness and roughness of the surface, but its anchorage profile is shallow, and it is easy to make spiral steel pipe stacking environmental pollution.
Reasonable use of clean rusty pipe fittings means to ensure long-term service production, create higher production efficiency.