Pipe flange types are selected according to connection method, pressure class, maintenance needs and installation space. A correct flange choice improves sealing performance and makes inspection or disassembly easier during pipeline operation.
Common pipe flange types
Blind flanges close the end of a piping system or pressure vessel opening. Slip-on flanges are commonly used for easier alignment and welding. Socket weld flanges are used for smaller high-pressure piping. Threaded flanges can be installed without welding in suitable services. Lap joint flanges are useful where frequent dismantling or alignment adjustment is required.
Material selection
Carbon steel flanges are widely used in general piping. Stainless steel flanges are suitable for corrosive media or clean service. Alloy steel flanges may be selected for high temperature, high pressure or special process conditions.
Standards and dimensions
Buyers should confirm flange standard, nominal size, pressure class, face type, bolt hole pattern, thickness and sealing surface. Flat face, raised face and ring type joint designs may be required depending on the gasket and pressure service.
Related product pages
See the main pipe flanges category, or compare with pipe elbows, pipe tees and reducers. Send drawings or specifications through the contact page.