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Question:

Dn is 250, Pn25 flange, what is the hole distance?

Dn is 250, Pn25 flange, what is the hole distance?

Answer:

Flange center hole distance d1=370mmFlange diameter D=425Aperture 30Bolt M27
Flange center hole distance d1=370mmFlange diameter D=425mmGB GB/T9113.1-2000
Flange center hole distance d1=370mmFlange diameter D=425Aperture 30Bolt M27

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