What is the difference between the HG/T20615-2009 flange standard and the ASME B16.5 flange standard?
The size of HG/T20615-2009 and the ASME basic B16.5 agreement, is China standard in American Standard standard, and ASME is also the basic material.
ASME B16.5 has 7 series.HG/T20615-2009 is the 6 series, and Class400 is not included.Rounding up some values.
One is the national standard, a subject is American Standard, almost the same size, accurate to the decimal size after some small differences, but the material above may be quite different, such as the ASME B16.5 with the most common material SA105, we can not completely domestic corresponding chemical materials, and it is close to 20 forging 16Mn, mechanical forging and its close.
