LG flange
Thread Content
In the general material grade table, large-diameter flanges use LG flanges; are LG flanges the same as flanges with large grooves? What is the difference between this type of flange and ordinary RF, WN, SW, etc.?
LG RF refers to the sealing surface, while WN and SW refer to the welding method. LG and RF are two different types of sealing surfaces based on distinct standards~~