Dn400 flange hole distance
Could you tell me the pressure and standard of the flange?
HG/T20592-2009 20592-97 standards of the Ministry of chemical industry. The center distance is 2.5 kg -6 kg 10 kg (495) from the center (515) is 16 kg (525) is the center distance of center distance is 25 kg (550) 40 kg (585) is the center distance of center distance is 63 kg (585) 100 kilograms of center distance (620)
DN400 flange hole distance, quantity, and pore size (the diameter of the bolt used) and flange form, pressure level, the national standard (GB standard, Ministry of chemical industry HB standards and foreign standards are not the same, the greatest impact is the pressure rating
