Derusting of ERW steel pipe

 1.    Cleaning Use solvent and emulsion to clean the surface of ERW steel pipe to remove oil, grease, dust, lubricant and similar organic substances, but it cannot remove rust, oxide scale, welding flux, etc. on the surface of ERW steel pipe, so it is only used in defense operations as an aid.

 

2.    Pickling Generally, two methods of chemical and electrolytic pickling are used for pickling, and only chemical pickling is used for pipeline anticorrosion, which can remove oxide scale, rust, and old coating. Although chemical cleaning can make the surface achieve a certain degree of cleanliness and roughness, its anchor pattern is shallow and it is easy to cause pollution to the surrounding environment.

 

3.    Tool rust removal Mainly use tools such as wire brushes to grind the surface of ERW steel pipe, which can remove loose oxide scale, rust, welding slag, etc. The rust removal of hand tools can reach Sa2 level, and the rust removal of power tools can reach Sa3 level. If the surface of the ERW steel pipe is adhered to a firm iron oxide scale, the rust removal effect of the tools is not satisfactory, and the anchor pattern depth required for anti-corrosion construction cannot be achieved.

 

4.    Spray rust Jet derusting is to drive the jet blades to rotate at a high speed through a high-power motor, so that the abrasives such as steel shot, steel sand, iron wire, minerals and other abrasives are sprayed on the surface of the ERW steel pipe under the powerful centrifugal force of the motor, which can not only completely remove oxides , rust and dirt, and ERW steel pipe can achieve the required uniform roughness under the action of the abrasive impact and friction.

 

Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.