What do you mean by flange specification 10K?
This is a JIS standard, that is, a Japanese standard. Domestically, it is a ship's standard pressure indication. "10K" means "PN1.0MPA".
This is a JIS standard, that is, a Japanese standard. Domestically, it is a ship's standard pressure indication. "10K" means "PN1.0MPA".
10K is the unit of pressure, or 10Kg/cm2, approximately equal to 1N/mm2, that is, 1MPaFlange specification "10K" means that this flange can only be used for 1MPa pressure vessels
