Alloy pipe is a type of seamless steel pipe, which is divided into structural seamless pipe and high-pressure heat-resistant alloy pipe. Mainly different from the production standards and industry of alloy tubes, annealing and tempering are carried out on alloy tubes to change their mechanical properties. Meet the required processing conditions. Its performance is more versatile and has higher utilization value than ordinary seamless steel pipes. The chemical composition of alloy pipes contains more Cr, and it has high temperature resistance, low temperature resistance, and corrosion resistance. Ordinary carbon seamless pipes do not contain alloy components or have very few alloy components. The reason why alloy pipes are widely used in industries such as petroleum, aerospace, chemical, power, boilers, etc. is that the mechanical properties of alloy pipes are variable and easy to adjust.

Rust removal grade, construction process of commonly used anti-corrosion coatings such as epoxy, phenolic, etc. for alloy pipes

To achieve the desired rust removal effect, it is necessary to choose abrasives such as single-layer epoxy, two-layer or three-layer polymer coatings based on the hardness of the alloy pipe surface, the degree of original rust, the required surface roughness, and the type of coating

Before spraying treatment, the grease and scale on the surface of the alloy tube are removed. The tube body can also be preheated to 40-60 degrees Celsius using a heating furnace to keep the surface of the alloy tube dry. This is because the surface of the alloy tube is free of grease and other dirt, which can enhance the rust removal effect

2Cr1MoVG alloy pipes have a hollow cross-section and are widely used as pipelines for transporting fluids, such as oil, natural gas, coal gas, water, mechanical processing, and certain solid materials. Compared with solid steel such as round steel, alloy steel pipes are lighter in weight when their bending and torsional strength is the same. Alloy steel pipes are an economical cross-sectional steel material widely used in the manufacture of structural and mechanical parts, such as oil drill rods, automotive transmission shafts, bicycle frames, and steel scaffolding used in construction. Using alloy steel pipes to manufacture circular parts can improve material utilization, simplify manufacturing processes, save materials and processing time, such as rolling bearing rings, jack sleeves, etc

The microstructure of 15CrMoG alloy tube in normal supply state is ferrite plus pearlite. During long-term operation of 15CrMo steel in the working temperature range of 500 ℃ -550 ℃, pearlite spheroidization, redistribution of alloy elements between solid solution and carbides, and changes in carbide phase structure will occur. The thermal strength and mechanical properties of 15CrMo steel gradually decrease with the degree of pearlite spheroidization and the degree of alloy element depletion in solid solution, resulting in material deterioration or even failure. Therefore, for a long time, the degree of pearlite spheroidization in the microstructure of 15CrMo steel has been widely used as one of the important criteria for determining the reliability of its use.

The microstructure of 15CrMoG alloy tube in normal supply state is ferrite and pearlite. During long-term operation of 15CrMo steel in the working temperature range of 500 ℃ -550 ℃, pearlite spheroidization, redistribution of alloy elements between solid solution and carbides, and changes in carbide phase structure will occur. The thermal strength and mechanical properties of 15CrMo steel gradually decrease with the increase of pearlite spheroidization degree and the degree of alloy element depletion in solid solution, resulting in material deterioration or even failure. Therefore, for a long time, the degree of pearlite spheroidization in the microstructure of 15CrMo steel has been widely used as one of the important criteria for determining the reliability of its use. Shandong Chenghe Jiaxin Steel Pipe Co., Ltd

Rust removal methods for alloy pipes, rust removal grades, and construction processes for commonly used anti-corrosion coatings such as epoxy, phenolic, and phenolic coatings for alloy pipes

To achieve the desired rust removal effect, it is necessary to choose abrasives such as single-layer epoxy, two-layer or three-layer polymer coatings based on the hardness of the alloy pipe surface, the degree of original rust, the required surface roughness, and the type of coating

Before spraying treatment, the grease and scale on the surface of the alloy tube are removed. The tube body can also be preheated to 40-60 degrees Celsius using a heating furnace to keep the surface of the alloy tube dry. This is because the surface of the alloy tube is free of grease and other dirt, which can enhance the rust removal effect. Shandong Chenghe Jiaxin Steel Pipe Co., Ltd