Since the quality of the individual spiral welded pipe is relatively large, it must be stacked in the outdoors, but this will be difficult to avoid the sun and rain, so the rusty spiral welded piling pipe has been plagued by storage time and conditions. So we have the need for knowledge about the spiral welded pipe rust comprehensive answers.
Spiral welded wire brushes and other tools used primarily on the surface of polished steel, spiral welded pipe cleaning and preheating can remove loose or warped oxide, rust, welding slag. Hand tools rust can reach Sa2 grade, spiral power tools rust Sa3 level can be achieved, if the steel surface firmly attached to the iron 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 steel tube (pipe) surfaces to achieve the removal of oil, grease, dust, lubricants and similar organic matter, but it can not remove the steel surface rust, oxide, flux, etc., Therefore, in the production of corrosion 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, and easy on the environment caused by pollution stacking spiral welded pipe. Rational use of means to clean up the rusty pipe fittings for a long time when the guarantee services in the production and create more production efficiency.
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