Definition: low temperature steel pipe is medium carbon structural steel. The cold and hot and low temperature steel pipes have good performance, good mechanical properties, low price and wide sources, so they are widely used. Its biggest weakness is that the workpieces with low hardenability, large section size and high requirements should not be used.
The low-temperature seamless steel pipe can work in the extremely cold environment of - 45~- 110 ℃. The outstanding advantage of low-temperature seamless steel pipe is that it can work in a very low environment, which is incomparable with ordinary seamless steel pipe. The low-temperature seamless steel pipe has good strength and low-temperature toughness, and is widely used in the manufacturing of low-temperature equipment in petroleum, chemical, fertilizer and other industries with a working temperature of - 45~- 110 ℃. With the development of relevant industries, the requirements for materials are not only limited to basic requirements such as mechanical properties and welding properties, but also the requirements for H2S corrosion resistance of low-temperature pipes.
Low-temperature seamless steel pipe is applicable to pipeline engineering in low temperature environment. There are two processes: cold drawing and hot rolling. From the perspective of steel design, the steelmaking, rolling, heat treatment and other processes of low-temperature seamless steel pipe should be strictly controlled to ensure that low-temperature seamless steel pipe has good strength, toughness and corrosion resistance. For the technical requirements of low-temperature seamless steel pipe, the production organization and production cost of the steel pipe should be comprehensively considered. The composition design of low-temperature seamless steel pipe needs to ensure that the product has appropriate strength, high low-temperature toughness, and convenient heat treatment process Good weldability and resistance to hydrogen-induced cracking.
Executive standard of low-temperature seamless steel pipe ASTM A333 - Seamless and Welded Steel Pipe for Low-Temperature Service
Material of low-temperature seamless steel pipe products: 16Mn, 10MnDG, 09DG, 09Mn2VDG, 06Ni3MoDG, etc.
Post time: Jan-30-2023
