Class 300 Forged Carbon Steel Socket Weld, Raised-Face Flange for Schedule 40 Pipe
Class 300 A105/SA-105 Socket Weld Flange for Schedule 40 Pipe
The Class 300 ASTM A105 / ASME SA-105 Forged Carbon Steel Socket Weld Raised-Face Flange for Schedule 40 Pipe provides a strong, compact connection for demanding industrial pressure piping systems. Combining forged carbon steel construction, a precision socket weld connection, 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 300 socket weld flange provides excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing components used throughout oil and gas, petrochemical processing, refineries, power generation, manufacturing, utilities, chemical processing, and industrial process piping systems.
The Class 300 designation identifies the flange's ASME pressure class rather than a maximum working pressure of 300 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, properly positioned according to applicable installation procedures, and permanently secured using an external fillet weld.
This design provides convenient pipe alignment and a compact welded connection, making socket weld flanges especially useful for appropriate smaller-diameter industrial piping systems.
Raised-Face Flange Construction
The raised-face (RF) flange incorporates an elevated gasket seating surface around the bore. Concentrating bolting force over this gasket area helps establish a reliable seal between compatible mating flanges.
Class 300 A105/SA-105 socket weld flanges are commonly manufactured according to ASME B16.5 requirements for applicable sizes.
When ordering, verify nominal pipe size, Schedule 40 pipe dimensions, socket dimensions, Class 300 rating, raised-face configuration, A105/SA-105 material, and service requirements to ensure accurate fit, dependable sealing, and reliable long-term industrial piping performance.