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What Are The Methods of Surface Treatment of Steel Pipes

Views: 2     Author: Site Editor     Publish Time: 2024-01-17      Origin: Site

If metal materials such as steel are exposed to the atmosphere for a long time, they will inevitably corrode and form loose rust, causing serious losses to modern industry.


At present, pipelines play an important role in various industries, so the surface treatment of steel pipes is also a factor that determines the service life of pipelines. It is the prerequisite for whether the anti-corrosion layer and steel pipes can be fastened together. It has been verified by research institutions that the life of the anti-corrosion layer depends on the type of coating, the quality of the coating, and the construction environment. In addition to the above factors, the surface treatment of the steel pipe accounts for about 50% of the impact on the life of the anti-corrosion layer. From this, we can know the importance of surface treatment of steel pipes, and we must constantly improve surface treatment methods. I have listed the following methods for surface cleaning of steel pipes that are common in the market. How to remove rust from steel pipes? A good method for surface treatment of steel pipes is What?


1. Cleaning.

Cleaning is a method of using chemicals to remove dirt on the surface of objects. It uses the cleaning agent to chemically transform, dissolve, and peel pollutants or coatings on the surface to achieve the effects of degreasing, rust removal, and decontamination. The disadvantage is that it cannot really remove rust, oxide scale, etc. on the surface of steel, so it can only be used as an auxiliary method in the anti-corrosion and rust removal process.


2. Use tools to remove rust.

Tool rust removal mainly uses a wire brush to polish the surface of steel pipes and steel materials, which can remove loose or lifted oxide scales, welding slag, rust, and other surface treatments. The rust removal of hand tools can reach the rust removal level Sa2, and the rust removal of power tools can reach the rust removal level Sa3. If the surface attachment of the steel is firm, the tool rust removal will not achieve the desired effect and the anchor pattern depth required for anti-corrosion construction will not be achieved.


3. Pickling.

A method that was widely used in rust removal a long time ago is usually chemical and electrolytic pickling. Pickling can remove scale and rust. Old coatings can sometimes be removed by sandblasting. The secondary treatment after rusting, and chemical pickling, can make the surface reach a certain level of cleanliness and roughness, but the anchor lines are shallow and cause environmental pollution, exceeding national environmental protection indicators.


4. Mechanical equipment - steel pipe shot blasting machine for rust removal.

The method of rust removal and surface treatment of steel pipe shot blasting machine is to project the shot (steel sand or sand) onto the surface of the workpiece at a very high speed and a certain angle, letting the shot blast impact the surface of the steel pipe, and then use the shot blasting machine inside the machine to make the shot blast. Repeat cycle system. This method can not only completely remove rust, oxides, and pollution from steel pipes, but also achieve the required uniform roughness under the action of the violent impact and friction of abrasives on steel pipes. The modified surface treatment method has achieved the advantages of low cost, high efficiency, economic and environmental protection, high degree of mechanization and intelligence.


The steel pipe shot blasting machine has a wide range of applications. It can clean the surface attachments, oxide layers, etc. of the workpiece so that the workpiece can show a new look and meet the workpiece usage standards. It can also make the surface of the workpiece smoother and smoother, which is beneficial to the later stage. spraying and other work. The steel pipe shot blasting machine can clean the inner and outer walls of the steel pipe, and the work efficiency is also very high.


The use of a steel pipe shot blasting machine makes the surface treatment of steel pipes more convenient and has a better cleaning effect. It can also save costs and reduce labor investment. This method is also being used in more and more fields. Today's steel pipe shot blasting machines are designed to be more environmentally friendly. For example, they have dust removal equipment that can collect dust generated during work without causing pollution. At the same time, the steel pipe shot blasting machine can also be recycled, which can reduce material consumption and reduce the cost of the enterprise. The steel pipe shot blasting machine works faster, saves a lot of time, and processes a large number of workpieces at the same time, improving the efficiency of the enterprise.


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Hunan Great Steel Pipe Co.,Ltd is a world-class production and service provider of submerged arc straight seam welded pipe as the first subsidiary of Shinestar Group. Hunan Great Steel Pipe Co.,Ltd pays more attention to in the pipeline engineering research areas as a pioneer of China Petroleum Pipeline & Gas Pipeline Science Research Institute.

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