Flange is one type of connection / component used when connecting between pipes and elements with valves, vessels, reaction columns, pumps and others. Some connection techniques other than flange are connecting directly to the welding (welding joint) or connecting with threaded joint like connecting bolts with nuts.
This type of flange is based on ANSI According to the American National Standards Institute (ANSI) the type of flange is divided into: 1. Flange Type Weldneck 2. Slip-on and Lap Joint Type Flange 3. Flange Type Threaded (threaded) 4. Socket Type Flange 5. Reducing Flange 6. Blind Flange