Seamless Steel Pipe

 Rust removal of carbon steel tubes (cs tube) is an important step in ensuring the safe operation and service life of pipelines. The following are 5 commonly used rust removal methods for carbon steel tubes: 1. Manual rust removal Manual rust removal uses hand tools (such as wire brushes, shovels, etc.) to remove the rust layer on the surface of carbon steel pipes. This method is simple to operate and suitable for small-scale rust removal projects. However, for large pipeline systems or pipelines that require high-precision rust removal, the effect of manual rust removal may not be ideal. 2. Electric rust removal Electric rust removal uses electric tools (such as electric wire brushes, electric shovels, etc.) to remove the rust layer on the surface of carbon steel pipes. This method is more efficient than manual rust removal and can complete the rust removal of a large number of pipes in a short time. 3. Pickling and rust removal Pickling rust removal is to dissolve the rust layer ...

Galvanized pipe has the dual advantages of corrosion resistance and long service life, and the price is corresponding to that of carbon steel seamless pipe or welded pipe, which is relatively cheap and has an increasing usage rate. However, some users do not pay attention when welding galvanized pipes, resulting in steel pipe defects. So what issues should we pay attention to when welding galvanized pipes? 1. The premise is to polish The galvanized layer at the welding joint must be polished off, otherwise bubbles, trachoma, false welding, etc. will occur. It will also make the weld brittle and reduce its rigidity. 2. Characteristics of galvanized steel pipes Galvanized steel is generally coated with a layer of zinc on the outside of low carbon steel, and the zinc layer is generally 20um thick. The melting point of zinc is 419°C and the boiling point is around 908°C. During welding, zinc melts into a liquid and floats on the surface of the molten pool or at the root of the weld. Zinc h...

 ERW welded pipe, also called electric resistance welded pipe, is a steel pipe made of steel plates or steel strips that are welded after being curled and formed. ERW welded steel pipe has a simple production process, high production efficiency, many varieties and specifications, and low equipment investment, but its general strength is lower than that of seamless pipes. As we all know, the service life of an item is directly related to its maintenance, and ERW welded pipe is certainly no exception. In order to extend its service life, we must pay attention to the daily care and maintenance of welded pipes. The following is a brief introduction to the maintenance methods of ERW welded pipes. 1. Clean and polish If the ERW welded pipe is damaged, it should be polished. In particular, scratches and spatter caused by contact with carbon steel parts, and damage caused by cutting slag must be carefully and thoroughly cleaned and polished. 2. Mechanical polishing Use appropriate polishin...

 Common welded pipe connection methods and specifications: A) Butt welding connection Butt welding connection is a connection method in which the ends of two welded pipes are connected by welding. The connection methods are divided into three types: full welding, short welding and head welding. 1. Fully soldered connection Full welding is a connection method in which the ends of two welded pipes are completely welded together. The standard requirement for full welding is that the height of the weld should not be lower than the surface of the base metal, and the quality of the weld should be ensured. In addition, attention should be paid to welding current and time control during the welding process to prevent excessive heat from causing the weld to be too long or welding slag to be mixed into the weld. 2. Short solder connection Short welding is a connection method in which only part of the ends of two welded pipes are welded. The length of the weld shall not be less than the speci...