Because the individual quality of API 5L PSL2 X52 spiral welded steel pipe is relatively large, it must be stacked outdoors, but it is difficult to avoid being exposed to the sun and rain, so the problem of rust has been plagued the storage time and conditions of API 5L PSL2 X52 spiral welded steel pipe. Therefore, it is necessary for us to have a comprehensive answer about the rust prevention knowledge of API 5L PSL2 X52 spiral welded steel pipe.
It mainly uses steel brush and other tools to polish the steel surface. The cleaning and preheating of API 5L PSL2 X52 spiral welded steel pipe can remove loose or warped oxide skin, rust, welding slag, etc. The derusting of hand tools can reach SA2 level, and that of power tools can reach SA3 level. If the surface of API 5L PSL2 X52 spiral welded steel pipe adheres to solid oxide scale, the derusting effect of tools is not ideal, and the depth of anchor pattern required by anti-corrosion construction cannot be reached.
Generally, chemical and electrolytic methods are used for pickling. API 5L PSL2 X52 spiral welded steel pipe only uses chemical pickling for anticorrosion, which can remove oxide skin, rust and old coating. Sometimes, it can be used as the reprocessing after sand blasting. Although chemical cleaning can make the surface clean and rough to a certain extent, its anchor pattern is shallow, and it is easy to pollute the stacking environment of API 5L PSL2 X52 spiral welded steel pipe.
