A333Gr.6 Low-Temperature Seamless Steel Pipe: A333Gr.6 low-temperature seamless steel pipe maintains excellent low-temperature toughness. In low-temperature environments, A333Gr.6 low-temperature seamless steel pipe retains good toughness, which is one of its most prominent characteristics. For example, under extreme low-temperature conditions ranging from -45℃ to -195℃, it still maintains structural integrity and stability, and is not prone to brittle fracture, ensuring the safe operation of pipeline systems under low-temperature conditions. This is due to its reasonable chemical composition and strict production process control, which allows the internal structure of the material to maintain good toughness at low temperatures.
A333Gr.6 Low-Temperature Seamless Steel Pipe: A333Gr.6 low-temperature seamless steel pipe has high tensile strength and yield strength, with a tensile strength ≥415MPa and a yield strength ≥240MPa. This high strength meets the material strength requirements of low-temperature pressure vessels and pipeline systems, ensuring that it will not undergo excessive deformation or failure when subjected to low-temperature pressure and loads.
A333Gr.6 Low-Temperature Seamless Steel Pipe: A333Gr.6 low-temperature seamless steel pipe has high tensile strength and yield strength, with a tensile strength ≥415MPa and a yield strength ≥240MPa. This high strength meets the material strength requirements of low-temperature pressure vessels and pipeline systems, ensuring that it will not undergo excessive deformation or failure when subjected to low-temperature pressure and loads. A333Gr.6 low-temperature seamless steel pipe features precise chemical composition control:
- Low carbon content, generally ≤0.30%. Controlled carbon content helps improve the steel’s toughness and reduces the likelihood of embrittlement at low temperatures.
- Contains an appropriate amount of silicon (Si≥0.10%). Silicon improves the steel’s high-temperature deoxidation ability and acid corrosion resistance.
- Manganese content is between 0.29 and 1.06%. Manganese is a strengthening element that can improve the steel’s hardness, wear resistance, and strength to a certain extent.
- Strictly controlled content of harmful elements such as phosphorus and sulfur, P≤0.025%, S≤0.025%. Reducing harmful elements improves the steel’s purity, low-temperature toughness, and weldability.
A333Gr.6 low-temperature seamless steel pipe has a uniform microstructure: the microstructure consists of ferrite + pearlite, with a uniform structure and a grain size of 7-9. This uniform microstructure lays the foundation for the excellent low-temperature toughness of the steel pipe, ensuring consistent performance across different parts of the pipe at low temperatures and reducing localized performance differences and potential risks caused by microstructure inhomogeneity.
A333Gr.6 cryogenic seamless steel pipes possess excellent weldability: the composition and microstructure of this steel pipe endow it with good weldability, making it less prone to welding defects such as cracks and porosity during the welding process. Selecting appropriate welding materials and processes can yield high-quality welded joints, ensuring the reliability of the pipeline system connection.
A333Gr.6 cryogenic seamless steel pipes have a wide range of applications: they are widely used in storage and transportation systems for cryogenic media such as liquefied natural gas (LNG), liquid nitrogen, and liquid oxygen, as well as in equipment such as cryogenic pressure vessels and cryogenic heat exchangers. They hold an important position in cryogenic engineering fields in the energy, chemical, and machinery industries.
Post time: Nov-10-2025