Flange DN25 PN4.025 what does it mean? 4, what does it mean?
2, in the valve industry, PN as nominal pressure symbol, and make the value of PN after the value of MPA, PN4.0, its nominal pressure value is 4.0Mpa
1, DN25, DN as the nominal diameter of the sign, note that 25mm refers to the approximate diameter reference size;2, in the valve industry, PN as nominal pressure symbol, and make the value of PN after the value of MPA, PN4.0, its nominal pressure value is 4.0Mpa
1, DN25, DN as the nominal diameter of the sign, note that 25mm refers to the approximate diameter reference size;
