The cold bending property of p235gh pipe is an important index for its mechanical properties

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The effect of nitrogen (N) on the properties of P235GH pipe and so on steel is similar to that of carbon and phosphorus. With the increase of nitrogen content, the strength of steel can be significantly improved, especially the plasticity, especially toughness, and the weldability will be decreased, and the cold brittleness will be intensified. At the same time, aging tendency, cold brittleness and hot brittleness will be increased, which will damage the weldability and cold bending property of steel. Therefore, the nitrogen content in p235gh pipe and so on steel should be reduced and limited as much as possible. Generally, nitrogen content should not be higher than 0.018%.

15Mo3 steel belongs to pearlitic heat-resistant steel, according to DIN17155 standard. p235gh pipe, 15Mo3 is a kind of steel that can still show its characteristics under high temperature and long time load. 15Mo3 material is used for heating surface of low and medium pressure boiler (working pressure is not more than 5.88MPA, working temperature is below 450℃).

Structural steel is a category of steel construction material that is produced with a particular cross section or shape, and some specified values of strength and chemical composition. p235gh pipe, Structural steel plates are normally supplied in the as-rolled condition. Our structural steel plate are supplied with thickness range 3mm to 350mm. The plates may be ordered normalized or stress relieved, or both. steel plates shall be normalized. steel plates and sheets shall be quenched and tempered.

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