Selection of equipment flange grades
Thread Content
The design pressure of the equipment is 16 kilograms; does the flange grade for the equipment’s piping need to be one higher, at 25 kilograms? Is there such a rule? What is the flange grade for that pipe connection?
Have your factory do the design; just use whatever template is available
According to the standards, different materials and temperatures have respective maximum allowable pressure values
It depends specifically on the design and materials; if the design checks are not met, it is necessary to upgrade to a higher grade. For special materials, the pressure rating of the flanges also needs to be increased by one grade