Class 150 Forged Carbon Steel Socket Weld, Flat-Face Flange for Schedule XH Pipe
Class 150 A105/SA-105 Socket Weld Flange for Schedule XH Pipe
The Class 150 ASTM A105 / ASME SA-105 Forged Carbon Steel Socket Weld Flat-Face Flange for Schedule XH Pipe provides a strong, compact connection for heavy-wall industrial piping systems. Designed for Schedule XH (Extra Heavy) pipe, this forged carbon steel flange combines durable construction, socket weld installation, and a flat-face sealing surface for dependable industrial service.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 150 socket weld flange provides excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for forged flanges and other pressure-containing components used throughout oil and gas, petrochemical processing, power generation, manufacturing, utilities, refineries, and industrial process piping systems.
The Class 150 designation identifies an ASME pressure class rather than a maximum operating pressure of 150 PSI. Allowable pressure depends on material, operating temperature, and applicable pressure-temperature ratings.
Socket Weld Connection for Schedule XH Pipe
A socket weld flange incorporates a recessed socket designed to receive the connecting pipe. Schedule XH pipe is inserted into the socket, properly positioned according to applicable installation requirements, and secured with an external fillet weld.
This configuration provides convenient alignment and a durable connection for appropriate smaller-diameter heavy-wall piping applications.
Flat-Face Flange Design
The flat-face (FF) flange features a gasket seating surface extending across the flange face without the elevated sealing area found on a raised-face flange. Flat-face configurations should be installed with compatible mating flanges and properly selected gaskets.
When specifying a Class 150 A105/SA-105 socket weld flat-face flange for Schedule XH pipe, verify nominal pipe size, pipe outside diameter, XH wall thickness, socket dimensions, facing, and applicable dimensional requirements.
Proper selection provides accurate fit, dependable sealing, and long-term performance in Schedule XH carbon steel industrial piping systems.