Class 150 Forged Carbon Steel Socket Weld, Raised-Face Flange for Schedule 40 Pipe
Class 150 A105/SA-105 Socket Weld Raised-Face Flange for Schedule 40 Pipe
The Class 150 ASTM A105 / ASME SA-105 Forged Carbon Steel Socket Weld Raised-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 raised-face sealing surface, this flange delivers dependable performance for commercial and industrial piping applications.
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 strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing piping components used throughout 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 rather than 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 features a recessed socket designed to receive the connecting pipe. The Schedule 40 pipe is inserted into the socket, positioned according to applicable installation requirements, and permanently secured with an external fillet weld.
For a given nominal pipe size, Schedule 40 determines the pipe wall thickness and inside diameter, while the outside diameter remains consistent with the applicable NPS. The socket is sized to accept the corresponding pipe outside diameter.
Raised-Face Flange Construction
The raised-face (RF) flange incorporates an elevated gasket seating area surrounding the bore. This design concentrates bolting force over the gasket area, helping establish a reliable seal between compatible mating flanges.
Class 150 A105/SA-105 socket weld flanges are commonly manufactured to applicable ASME B16.5 dimensional and pressure-temperature requirements.
When ordering, verify nominal pipe size, Schedule 40 dimensions, socket size, Class 150 rating, raised-face configuration, A105/SA-105 material, and service requirements to ensure proper fit, dependable sealing, and reliable industrial piping performance.