Problems with the HG20615 standard
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I would like to ask the fellow sailors: how does the HG20615 flange standard correspond to foreign standards such as ASME and ANSI standards? It would be great to have detailed information!
HG20615~HG20635 were formulated based on American standards ANSI16.47 and ASME B16.5, with the units simply converted from imperial to metric
The HG20615 flange standard belongs to the American system, with imperial units
Check carefully; the sizes are basically the same
The HG20615 flange standard belongs to the American system, with units in imperial measurements. The HG20592 flange standard is part of the European system, using metric units. The American system is the most widely used one
The dimensions of HG20615 are basically the same as those of the American standard B16.5; any slight differences are merely due to rounding during unit conversion.
The HG20615 flange standard corresponds to the American system, while the HG20592 flange standard corresponds to the European system; nowadays, HG20592 is used in most cases
The flange for HG20615 is designed in accordance with ASME and ANSI standards; its dimensions are naturally in metric units. However, when selecting a flange, it is still necessary to follow the relevant standards, as each standard has its own set of rules. However, if the gasket is selected based on the flange and it is for pressure testing, in that case you can refer to the parameters specified in HG20615 when choosing the gasket for ASME standard flanges; but normally, a unified system should be used for such selections!
20615 is an American system standard; I’m not aware of the others