Flange Types
Pipe Flanges
A comprehensive overview of pipe flanges and their role in piping systems.
Pipe flanges are fittings that connect pipes, valves, pumps, and other components in a piping system using bolted connections. They consist of a disc with a central bore (matching the pipe size) and a bolt hole pattern around the perimeter. When two flanges are bolted together with a gasket between them, they form a pressure-tight joint that can be assembled and disassembled for maintenance.
Flanges are manufactured to standardized dimensions per ASME B16.5 (sizes 1/2" to 24") and B16.47 (sizes 26" to 60"), ensuring interchangeability between manufacturers. Pressure classes (150, 300, 600, 900, 1500, 2500) define the maximum working pressure at various temperatures. Materials range from carbon steel (most common) through stainless steels, alloy steels, and specialty metals for corrosive or high-temperature service.
Flanges.IO is a full-service pipe flange supplier with inventory covering all standard types, sizes, materials, and pressure classes. We serve the petrochemical, refinery, power generation, oilfield, and waterworks industries with stock and custom flanges. Whether you need a single specialty flange or a complete project bill of materials, contact us for competitive pricing and fast delivery.
