Currently the main use of rust on the steel wire brushes and other tools to be polished appearance, spiral piling pipe with plain bars is the difference between appearance with longitudinal ribs and transverse ribs.
Spiral piling pipe cleaning and preheating can remove loose or warped oxide, rust, welding slag. Hand tools rust can reach Sa2 grade power tools rust Sa3 level can be achieved, if attached to a solid iron oxide steel exterior skin, the effect is not ideal tools rust, anti-corrosion construction required to reach the depth of anchor pattern. Acid by solvent, emulsion cleaning fluid pressure welded tube exterior to achieve the removal of oil, grease, dust, lubricants and similar organic matter, but it can not remove the appearance of the steel rust, oxide, flux, etc., so the corrosion production only as an adjunct. Generally use two methods to do chemical and electrolytic pickling treatment, pipeline corrosion using only chemical pickling can descaling, rust, old paint, sometimes used as a sand blasting after reprocessing. Although chemical cleaning can achieve a certain surface cleanliness and roughness, but the anchor pattern shallow, but easy on the spiral steel stacking pollute the environment.
Cleaning methods used to remove grease and fouling steel exterior, spiral steel pipe in spray (throwing) shot before treatment. Using the tube furnace preheated to 40 to 60 ℃, dry stick appearance of the steel pipe. Spray (throwing) shot deal, due to pressure transmission fluid with frequency spiral welded steel pipe appearance without grease and other dirt, rust can enhance the effect of the dry pipe appearance but also conducive to steel shot, steel grit and rust and oxidation the separation of the skin, so that the low pressure fluid rust welded steel pipe cleaner appearance.
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