Issues with operating pressure at room temperature for flanges
Thread Content
As can be seen from Table 7 in HG/T 20592~20635-2009, for domestically produced low-carbon steel flanges (1C4), the pressure at room temperature or at temperatures up to 100°C is lower than the nominal pressure； JB/T 74-1994: Technical specifications for pipeline flanges; GB 9131-1988: Temperature and pressure classes for steel pipe flanges. At normal temperatures or up to 100°C, the pressure at which the material operates is the same as its nominal pressure. The pressure of the materials in the GD87–Northeast Plant Thermal Power Plant steam and water pipeline parts and components typical design manual at temperatures up to 200°C is also consistent with the nominal pressure
I really hadn’t noticed this detail before! Like it!
I hadn’t paid much attention to this thing before; this time I’ve learned something about it