Class 150 Forged Carbon Steel Socket Weld, Flat-Face Flange for Schedule 40 Pipe
Class 150 A105/SA-105 Socket Weld Flat-Face Flange for Schedule 40 Pipe
The Class 150 ASTM A105 / ASME SA-105 ASME B16.5 Forged Carbon Steel Socket Weld Flat-Face Flange for Schedule 40 Pipe provides a compact, durable connection for industrial pressure piping systems. Combining forged carbon steel construction, a precision-machined socket, and flat-face sealing surface, this flange delivers dependable performance for commercial and industrial piping installations.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 150 socket weld flange offers excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing components used in oil and gas, petrochemical processing, refineries, power generation, chemical processing, manufacturing, utilities, and industrial process piping systems.
The Class 150 designation identifies an ASME pressure class, not a maximum working pressure of 150 PSI. Actual allowable pressure depends on material, operating temperature, and applicable pressure-temperature ratings.
Socket Weld Design for Schedule 40 Pipe
A socket weld flange incorporates a recessed socket designed to receive the connecting pipe. The Schedule 40 pipe is inserted into the socket, positioned with the required installation clearance, and permanently secured using an external fillet weld.
For a given nominal pipe size, Schedule 40 establishes the pipe wall thickness and inside diameter while the outside diameter remains consistent with the applicable NPS.
Flat-Face Flange Construction
The flat-face (FF) flange provides a gasket seating surface extending across the flange face without the elevated sealing area found on a raised-face flange. Proper gasket selection and compatible mating components are important for achieving a reliable flange connection.
Manufactured to applicable ASME B16.5 requirements, these Class 150 forged carbon steel flanges provide standardized dimensions and pressure-temperature ratings.
When ordering, verify nominal pipe size, Schedule 40 dimensions, socket size, Class 150 rating, flat-face configuration, A105/SA-105 material, and ASME B16.5 requirements for proper piping system compatibility.