Is the nominal diameter of pressure vessels denoted by DN or φ, and does it refer to the inner diameter or the outer diameter?
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Should the nominal diameter of pressure vessels be denoted by DN or φ, and does it refer to the inner diameter or the outer diameter? It seems that GBT 9019-2015 \"Nominal Diameter of Pressure Vessels\" doesn’t clarify this point very well
The nominal diameter is denoted by DN, while the inner diameter is denoted by φ
The nominal diameter is denoted by DN, while the inner diameter is denoted by φ
The nominal diameter is denoted by DN, while the inner diameter is denoted by φ
The nominal diameter of pressure vessels is denoted by DN, which represents the inner diameter.
The nominal diameter generally refers to the inner diameter, while φ usually denotes the outer diameter. Thickness is included in this measurement; the nominal diameter, on the other hand, does not take thickness into account
General pressure vessels are indicated as: outer diameter (φ) X length X wall thickness
GBT 9019-2015 \"Nominal Diameter of Pressure Vessels\" seems less clear than the old standard
It seems that GBT 9019-2015 \"Nominal Diameter of Pressure Vessels\" is less clear than the old standard
The nominal diameter is denoted by DN; it represents a series, and is not the outer or inner diameter. It is a value close to the inner diameter. For containers, when the DN values are the same, the outer diameter is indicated by φ.