How to improve the performance of p355gh used for gas industry

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Temperature has a great influence on the strength of the material, P355GH used for gas industry. When the temperature exceeds a certain value, the strength limit of the steel will be reduced. The higher the temperature, the lower the strength. In addition, the longer the steel is used at high temperature, the lower the strength. Therefore, if the steel works at high temperature for a long time, the instantaneous strength of the steel can not be used as its performance index, nor can the room temperature performance replace the high temperature performance.

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p355gh used for gas industry, nuclear power steel has strict and complex mechanical properties requirements. The number of samples has increased significantly. It is necessary to conduct vertical and horizontal inspection at different positions in different states such as high temperature, normal temperature and low temperature after delivery and trial simulated post weld heat treatment (SPWHT). For example, 16MnD5 steel plate is used for pressurizer, and more than 50 impact samples are required to be inspected at most for one steel plate.

p355gh used for gas industry 2020 spot size: 16*1800*6000, 15*2500*10000, 25*2400*8200, 50, 25*2400*8200, 16*2000*10713, 25*2400*8200, 16*2270*11900, 15*2500*10000, 25*2400*8200, 28*2170*13000, 130*2200*7700, 100*1770*6650, 88*3440*9200, 12*2200*8000, 8*2200*5730, 16*2320*10000, 30*2400*9680 12*2200*8000, 16*1800*6000, 50*1820*10700, 130*2200*7700.