Class 300 Forged Carbon Steel Threaded, Raised-Face Flange
Class 300 A105/SA-105 Threaded Raised-Face Flange
The Class 300 ASTM A105 / ASME SA-105 ASME B16.5 Forged Carbon Steel Threaded Raised-Face Flange provides a durable mechanical connection for industrial piping systems where a threaded connection is preferred. Combining forged carbon steel construction, internal pipe threads, and a raised-face sealing surface, this flange provides strength, reliability, and convenient installation for appropriate pressure piping applications.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 300 threaded flange offers excellent mechanical 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 300 designation identifies an ASME pressure class rather than a maximum working pressure of 300 PSI. Actual allowable pressure depends on material, operating temperature, flange size, and applicable pressure-temperature ratings.
Threaded Flange Design
A threaded flange features internal pipe threads that allow it to connect directly to compatible externally threaded pipe without requiring a welded pipe-to-flange joint. This design can simplify installation where welding is undesirable, impractical, or restricted by operating conditions.
Thread type, pipe size, material, temperature, and service conditions should always be verified before selecting a threaded flange.
Raised-Face Flange Construction
The raised-face (RF) flange incorporates an elevated gasket seating surface surrounding the bore. This design concentrates bolting force over the gasket area, helping establish a dependable seal between compatible mating flanges.
Manufactured to applicable ASME B16.5 requirements, Class 300 A105/SA-105 threaded flanges provide standardized dimensions, bolt patterns, facing requirements, and pressure-temperature ratings.
When ordering, verify nominal pipe size, thread requirements, Class 300 rating, raised-face configuration, A105/SA-105 material, ASME B16.5 requirements, gasket selection, and service conditions for reliable industrial piping performance.