15CrMoG alloy steel pipe is a seamless steel pipe with the properties of a high-pressure alloy pipe. Its core properties include high-temperature thermal strength, oxidation resistance, hydrogen corrosion resistance, and suitability for fluid transportation under high-pressure environments. The following is a detailed summary of its high-pressure alloy pipe properties:
First, what are the materials and properties of 15CrMoG alloy steel pipe?
1) Material: 15CrMoG alloy steel pipe belongs to pearlitic heat-resistant steel, containing alloying elements such as chromium and molybdenum. These elements endow the steel pipe with excellent high-temperature performance and corrosion resistance.
2) High-temperature thermal strength: At high temperatures, 15CrMoG alloy steel pipe has high thermal strength (δb≥440MPa), capable of withstanding stress under high-temperature and high-pressure environments, maintaining structural stability and safety.
3) Oxidation resistance: This steel pipe has good oxidation resistance, enabling long-term use in high-temperature oxidizing environments without significant oxidation corrosion, thus extending the service life of the steel pipe.
4) Hydrogen Corrosion Resistance: 15CrMoG alloy steel pipes also possess a certain degree of resistance to hydrogen corrosion, making them suitable for chemical equipment and other applications in hydrogen-rich environments.
Second, what are the application areas of 15CrMoG alloy steel pipes?
1) Power Industry: 15CrMoG alloy steel pipes are widely used in the power industry, primarily for manufacturing high-pressure boilers, superheater tubes, and high- and medium-pressure pipelines with steam parameters of 510℃.
2) Petrochemical Industry: In the petrochemical field, 15CrMoG alloy steel pipes can be used to transport high-temperature and high-pressure fluids, such as in synthesis tower outlet pipelines, where hydrogen corrosion resistance is required.
3) Other Fields: In addition, 15CrMoG alloy steel pipes can also be used in geological drilling, shipbuilding, and other fields as pressure-bearing components or structural parts.
Third, what is the manufacturing process and standard details of 15CrMoG alloy steel pipes?
1) Manufacturing Process: The manufacturing process of 15CrMoG alloy steel pipes includes two methods: hot rolling (extrusion) and cold drawing (rolling). The hot rolling process includes steps such as billet heating, piercing, and sizing cooling; the cold drawing process requires annealing, pickling, and multiple cold working processes.
2) Standards: The steel pipe conforms to standards such as GB5310-2008, which specify the chemical composition, mechanical properties, and dimensional tolerances of the steel pipe, ensuring its quality and reliability.
Fourth, what are the dimensions and specifications of 15CrMoG alloy steel pipes?
1) Outer diameter and wall thickness: The outer diameter and wall thickness of 15CrMoG alloy steel pipes can be customized according to user needs. Common outer diameter ranges from 16mm to 480mm, and wall thickness ranges from 3mm to 50mm.
2) Length: The length of hot-rolled steel pipes is typically 3m to 12.5m, while the length of cold-drawn steel pipes is 1.5m to 9m. Users can choose the appropriate length according to their actual needs.
Fifth, what are the welding and heat treatment procedures for 15CrMoG alloy steel pipes?
1) Weldability: Due to the high content of alloying elements such as Cr and C in 15CrMoG alloy steel pipes, the steel has a significant tendency to harden, resulting in poor weldability. Therefore, preheating measures and the use of specialized welding materials are required during the welding process.
2) Heat Treatment: Post-weld high-temperature tempering is usually required to eliminate welding stress and improve the joint microstructure and properties. Precise control of parameters such as heating/cooling rates and holding time is necessary during heat treatment.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
