Pickled Seamless Pipe

Pickled smls pipe is a seamless steel pipe that has been specially treated.

In the production process, the basic shape of the seamless steel pipe is first manufactured through processes such as hot rolling or cold drawing. Then, pickling treatment is carried out, which is a key step. The pickling process usually uses acidic solutions such as hydrochloric acid, sulfuric acid or nitric acid to remove impurities such as oxide scale, rust, oil stains, etc. on the surface of the steel pipe. Through pickling, the surface of the steel pipe can be bright and clean, greatly improving the surface quality and corrosion resistance of the steel pipe.

Types of seamless steel pipes that need pickling

In the metal processing industry, pickling is a commonly used treatment method, mainly used to remove iron oxide scale and rust on the metal surface. As an important industrial material, seamless steel pipes also need to be pickled in some application scenarios. So, what kind of seamless steel pipes need pickling?

Usually, ss smls pipe are the main types that need to be pickled. During the production, processing, transportation and storage of stainless steel, a layer of oxide scale or rust is easily formed on the surface. These rust and oxides not only affect the aesthetics of the product, but also reduce its corrosion resistance and service life. Therefore, pickling can remove these surface contaminants and restore the original metallic luster and performance of the stainless steel seamless pipe.

In addition, some cs seamless pipe may also need pickling under special circumstances. For example, when there is severe rust or contaminants on the surface of the carbon steel pipe, pickling can help clean the surface and provide good conditions for subsequent treatments (such as galvanizing, painting, etc.).

Material of pickled seamless pipe

As an important industrial material, the choice of material directly determines its performance and application range. So, what is the material of pickled seamless pipe? The materials of pickled smls pipe mainly include carbon steel, alloy steel and stainless steel. After pickling, these materials have a smoother surface, remove impurities and rust, and increase the service life of the pipe:

1. Carbon steel

Carbon steel pickled seamless steel pipe is the most widely used one. After pickling, this material of steel pipe can remove the surface oxide scale and improve the cleanliness and corrosion resistance of the steel pipe. Carbon steel seamless steel pipes have been widely used in pipelines in many industries such as oil, natural gas, chemical industry, and aviation due to their good mechanical properties and relatively low cost.

2. Alloy steel

Alloy steel pickled seamless steel pipes are rich in a variety of alloy elements, which can significantly improve the strength, toughness and corrosion resistance of steel pipes. Therefore, alloy steel seamless steel pipes have advantages in situations where they need to withstand higher pressures and harsher working environments, such as nuclear industry, aviation, aerospace, and chemical industry.

3. Stainless steel

Stainless steel pickled seamless steel pipes mainly include austenitic stainless steel, ferritic stainless steel, duplex stainless steel and other materials. Stainless steel has been widely used in petrochemical industry, food processing and other fields due to its excellent corrosion resistance. Pipeline pickling treatment can further remove the oxide layer and impurities on the surface of stainless steel, and improve the surface finish and corrosion resistance of the steel pipe.

Advantages of pickled seamless pipes

1. Because of its clean surface, it can be better combined with other materials in subsequent processing and use, such as for the manufacture of chemical equipment, oil pipelines, etc., which can avoid corrosion and poor sealing caused by surface impurities.

2. Good surface quality also makes it more advantageous in appearance, and it is suitable for some occasions with high requirements for appearance.

3. After appropriate post-treatment, such as passivation, the smls pipe after pickling can further enhance its corrosion resistance and extend its service life.

Application of pickled seamless pipes

In the fields of petroleum, chemical, pharmaceutical, food, etc., there are extremely high requirements for the corrosion resistance and cleanliness of pipeline materials. These industries usually use stainless steel seamless pipes, which are pickled to meet strict hygiene and production requirements. In addition, in the construction of infrastructure such as urban water supply and heating, pickled seamless pipes also play an important role, ensuring the safety and reliability of the pipeline network.