What Types of Tempering Line Pipe
According to GB/T9711.1 performance requirements of different pipeline steel pipe, according to the different tempering temperature and tempering can be divided into the following kinds: 1, low temperature tempering (150-250 degrees)Low temperature tempering income group as tempered martensite. Its aim is to keep a hardened steel under the premise of high hardness and high wear resistance, decrease the quenching stress and brittleness, lest when using split or premature failure. It is mainly used for cutting all kinds of high carbon cutting, measuring tool, GB/T9711.1 pipeline steel pipe, such as pieces of rolling bearing and carburizing. 2, medium temperature tempering (250-500 degrees)Organization for tempered troostite middle temperature tempering. Its purpose is to obtain high yield strength, elastic limit and high toughness. Therefore, it is mainly used for various kinds of GB/T9711.1 pipeline steel pipe and hot mould processing, after ...