Do you know the knowledge about the nominal pressure called in FRP flange? Hengshui Jiubo Composites Co., Ltd. can give you some introduction.
The so-called flange nominal pressure, for example, let you understand more understandable. A flange of PNO 6 MPa means a flange of a specific size which is made of 16MnR and whose maximum allowable operating pressure at 200 ° C is 0.6 MPa. If this PN0.6MPa flange is used at a temperature higher than 200 ℃, then its maximum operating pressure will be lower than its nominal pressure 0.6MPa. Conversely, if it is used below 200 ℃ conditions, still press 200 ℃ to determine the maximum working pressure.
The flange nominal pressure is determined by the flange's maximum operating pressure, operating temperature, and flange material. Because in the development of the flange size series, the calculation of the flange thickness is based on 16MnR mechanical properties at 200 ℃ as a benchmark. Therefore, the provisions of this benchmark to determine the size of the flange at 200 ℃, its maximum allowable operating pressure is considered to have the nominal pressure of the flange size.
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