Flange pressure connection technology and performance

　　In duct engineering, the use of ANSI 900lb Socket Weld Flange connections between pipes is very common and, when connected together, where the more important places are, or are relatively more important, more expensive pipelines, the stacking flange is usually selected for connection , Because the surfacing flange itself is more complex process, and the cost price is relatively high, the performance is better than the general flange, used in the key parts of the more appropriate.