Thick wall stainless steel pipe uses solvent and emulsion to clean the steel surface to remove oil, grease, dust, lubricant and similar organics, but it can not remove rust, scale and welding flux on the steel surface. Therefore, it is o原来used as an auxiliary method in anti government operation. Generally, chemical and electrolytic methods are used for pickling treatment. o原来chemical pickling is used for pipeline anti-corrosion, which can remove oxide scale, rust and old coating. Sometimes it can be used as reprocessing after sand blasting. Although chemical cleaning can make the surface reach a certain cleanliness and roughness, its anchor lines are shallow and simple, which pollutes the surrounding environment. It mainly uses steel wire brush and other things to polish the steel surface, which can remove loose oxide scale, rust, welding slag, etc. The manual East-West derusting can reach SA2, and the power East-West derusting can reach SA. If the steel surface is attached with firm oxide scale, the East-West derusting effect is not ideal, and the anchor depth required for anti-corrosion construction can not be reached. The high-power motor drives the eruption blade to rotate at high speed.
A processing method of thick wall stainless steel pipe is to process small-diameter steel pipe into large-diameter steel pipe. The mechanical properties of thick wall straight seam welded pipe are slightly worse than that of hot-rolled straight seam welded pipe. Limited to the limited standards of thick wall straight seam welded pipe in steel mills, the straight seam steel pipe was born according to the needs of end consumers. The standard model of thick wall stainless steel is relatively random and is generally manufactured according to the needs of customers.
The two-step push pipe expander used for thick wall stainless steel pipe integrates cone die diameter expansion skills, digital medium frequency induction heating skills and hydraulic skills in one machine, with its reaso纳夫莱过程,能耗低、有限公司nstruction investment, good product quality, wide range of material and product standard applicability, sensitivity and low input production batch adaptability, It replaces the traditional pulling type expanding skill of steel pipe profession. Because it is difficult to deal with the supply of large-diameter steel pipe, thick wall stainless steel pipe has become an important product to deal with the shortage of large-diameter steel pipe in China. The serious supply situation of large-diameter steel pipe market has been alleviated.