What does "HG20592-97 PL40-1.6RF" mean?

Answer:

HG20592-97 is the standard of the Ministry of chemical industry. Most of the standard flanges are in the market.PL said: plate flange40 is the path, with DN means connection caliber is 45mm (B Series), 48mm (A Series) steel pipe.1.6 pressure: 16 kg pressure flange.RF seal form: projection surfaceIt is common to the flange on the market,DN40 16 kg pressure plate flang.

The chemical change of quasi PL is 40 DN with steel plate welding diameter B45 or A48 -1.6 is the pressure of 16 kg RF pressure is raised face sealing surface in the form you can enter HG20592-97 then there you are looking for content on Baidu

HG20592-97 Ministry of chemical industry for 97 years now is the 2009 edition of the PL standard is 40 DN with steel plate welding diameter B45 or A48 -1.6 is the pressure of 16 kg pressure RF is the sealing surface in the form of convexityIt is common to the flange on the market,DN40 16 kg pressure plate flang