16MnDG Low-Temperature Steel Pipe is a seamless steel tube specifically designed for low-temperature environments. Below is a detailed introduction to it:
I. Basic Overview
The 16MnDG low-temperature steel pipe is a seamless pipe containing 16% manganese, less than 0.05% sulfur and phosphorus impurities, and a small amount of other alloy elements. It is produced in accordance with the standard GB/T18984-2016, jointly issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China and the Standardization Administration of the People's Republic of China.
II. Key Features
Excellent low-temperature toughness16MnDG low-temperature steel pipes exhibit excellent toughness in low-temperature conditions, capable of withstanding pressure and stress at low temperatures.
Excellent corrosion resistanceThis steel pipe is made from special alloy materials, featuring excellent corrosion resistance and the ability to withstand侵蚀 by chemical mediums.
High-strengthThe 16MnDG low-temperature steel pipes have high yield and tensile strengths, capable of withstanding considerable mechanical loads. Their tensile strength ranges from 490 to 665 MPa, with a yield strength of no less than 325 MPa and elongation of no less than 30% (in the longitudinal direction). Additionally, the low-impact test temperature for these pipes is -45°C.
16MnDG low-temperature steel pipes are typically delivered in normalizing condition and should undergo hydrostatic testing on a per-pipe basis. The test pressure is 10MPa, with a holding time of not less than 5 seconds, and no leakage is permitted in the pipes. Additionally, the inner and outer surfaces of the pipes are not allowed to have defects such as folds, rolled-in edges, delamination, cracks, or scabs. These defects should be completely removed, with the actual wall thickness at the removal site not less than the minimum allowed wall thickness. Local defects with depths not exceeding the negative wall thickness deviation are permitted to exist.
In summary, the 16MnDG low-temperature steel pipe, with its excellent low-temperature toughness, strength, and corrosion resistance, has been widely used in low-temperature pipeline systems for the oil, chemical, and energy industries. As industrial sectors continue to evolve, the demand for seamless steel pipes for low-temperature pipelines is also on the rise. In the future, the production processes and performance of 16MnDG low-temperature steel pipes will be further optimized and improved to meet higher-level demands.
