The EN10217-2 P235GH welded steel pipe is a high-quality steel product strictly manufactured in accordance with the European standard EN10217-2. It plays a pivotal role in the modern industrial system.
Material Composition
P235GH belongs to non-alloy heat-resistant steel, and the precise control of its chemical composition is the cornerstone of its excellent performance. The carbon content is strictly limited to no more than 0.16%. The low carbon content effectively avoids the embrittlement problem caused by carburization of the steel in high-temperature environments, enhancing the high-temperature stability of the material. The manganese content ranges from 0.6% to 1.2%. Manganese can strengthen ferrite and improve the strength and toughness of the steel. The phosphorus content is ≤0.025%. Strict control of the phosphorus content can prevent the steel from experiencing cold brittleness, ensuring that the steel also has good mechanical properties in low-temperature environments. In addition, it also contains a small amount of elements such as silicon. These elements work together to endow the steel with good corrosion resistance and stability, providing a solid foundation for its subsequent processing performance and mechanical properties.
Prominent Characteristics
Excellent Mechanical Properties
It has relatively high strength, with a tensile strength ranging from 350 to 480 MPa, and can withstand relatively large external forces without breaking. The yield strength varies depending on the thickness of the steel. For example, when the thickness is ≤16 mm, the yield strength is ≥235 MPa. This characteristic enables it to perform excellently under pressure-bearing working conditions. At the same time, the elongation is ≥24%, which means that the steel has good plasticity and is not prone to brittle failure during the deformation process under stress, meeting the requirements of various complex stress conditions.
Good Machinability
It can undergo various processing operations, such as shearing, bending, and drilling. During the bending process, it can be precisely formed according to design requirements, meeting the needs of different projects for the shape of the pipe. During the drilling process, the hardness and toughness of the steel are well-matched, and problems such as excessive drill wear or uneven hole walls are not prone to occur. It is easy to form and assemble, and can well adapt to different engineering needs.
Excellent Weldability
During the welding process, the strength and toughness of the weld can meet the requirements of the base metal. This is because its chemical composition has good compatibility with the welding process. After welding, the weld structure formed is uniform, without obvious composition segregation or defects, ensuring the strength and sealing of the pipe connection, facilitating the connection with other components, and effectively ensuring the integrity of the entire structure.
Good Corrosion Resistance
In common corrosive environments such as acidic, alkaline, and salt solutions, a relatively stable oxide protective film can be formed on the surface of the P235GH welded steel pipe. This protective film can effectively prevent the corrosive medium from further invading the interior of the steel, thereby maintaining a certain degree of corrosion resistance and stability and extending the service life of the pipe.
Remarkable Advantages
Reliable Quality Assurance
It is strictly produced in accordance with the European standard EN10217 - 2. From the selection of raw materials to each process in the production process, there is strict quality control. During the production process, the chemical composition and mechanical properties of the steel are tested multiple times to ensure that each steel pipe meets the standard requirements. Its reliable quality has been widely recognized and can ensure the long-term stable operation of the project.
High Cost - Performance Advantage
Compared with some high-performance alloy steels, the P235GH welded steel pipe can meet most conventional industrial needs at a more reasonable cost. Its production process is relatively mature, and the raw material cost is also relatively low. In large-scale industrial applications, it can effectively reduce the overall cost of the project and bring good economic benefits to enterprises.
Wide Range of Applications
Core Application in the Petrochemical Industry
In petrochemical production, it is often used to manufacture key equipment such as pressure vessels, reactors, and storage tanks. These equipment need to withstand extreme conditions such as high pressure, high temperature, and strong corrosion. With its excellent strength, heat resistance, and corrosion resistance, the P235GH welded steel pipe can operate stably under such harsh working conditions, ensuring the continuity and safety of petrochemical production.
Important Support in the Power Industry
In the power industry, it can be used as the structural material for equipment such as boilers and steam turbines. For example, in a boiler, it needs to withstand the pressure and corrosion of high-temperature steam. The high-temperature stability and good mechanical properties of the P235GH welded steel pipe enable it to ensure the normal operation of the equipment in such high-temperature, high-pressure, and corrosive environments, and it is an indispensable part of power production equipment.
Wide Application in Other Industrial Fields
In the machinery manufacturing industry, it is used to manufacture some pressure-resistant structural parts to provide reliable support for mechanical equipment. In the shipbuilding industry, it can be used to manufacture the cabin structure and pipeline systems of ships, adapting to the corrosion and pressure in the marine environment and providing guarantee for the safe navigation of ships.
