Class 150 Forged Carbon Steel Threaded, Flat-Face Flange
Class 150 ASTM A105 / ASME SA-105 Threaded Flange
The Class 150 ASTM A105 / ASME SA-105 Forged Carbon Steel Threaded Flat-Face Flange provides a strong, convenient connection for industrial piping systems where welding is unnecessary, impractical, or restricted. Featuring internal threads and a flat-face sealing surface, this carbon steel flange connects directly to compatible externally threaded pipe for efficient installation and maintenance.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this threaded flange delivers the mechanical strength, toughness, and durability required for pressure piping applications. A105/SA-105 material is widely used for forged steel flanges, fittings, valves, and pressure-containing piping components throughout industrial facilities.
The Class 150 designation identifies an ASME pressure class rather than a maximum operating pressure of 150 PSI. Actual allowable pressure varies according to material, operating temperature, and applicable pressure-temperature ratings.
Carbon Steel Threaded Flange Design
A threaded flange incorporates internal pipe threads that engage compatible male-threaded pipe. Because installation does not require welding, threaded flanges can provide a practical solution for selected industrial, utility, mechanical, and process piping applications.
Correct thread type, nominal pipe size, service conditions, and piping specifications should be confirmed before installation.
Flat-Face Flange Construction
The flat-face (FF) flange features a gasket seating surface extending across the entire flange face rather than using the elevated sealing area found on a raised-face flange. Flat-face configurations are typically used when connecting to compatible flat-face flanges, valves, pumps, fittings, or equipment.
Class 150 A105/SA-105 threaded flanges may be manufactured according to ASME B16.5 requirements for applicable sizes, covering dimensions, facing, threading, bolting, tolerances, and pressure-temperature ratings.
For industrial contractors, MRO departments, and piping professionals, the Class 150 A105/SA-105 forged carbon steel threaded flat-face flange provides a durable, serviceable solution for reliable threaded piping connections.