Class 600 Forged Carbon Steel Weld Neck, Raised-Face Flange for Schedule XH Pipe
Class 600 A105/SA-105 Weld Neck Flange for Schedule XH Pipe
The Class 600 ASTM A105/ASME SA-105 ASME B16.5 Forged Carbon Steel Weld Neck Raised-Face Flange for Schedule XH Pipe provides a strong, permanent connection for demanding industrial pressure piping systems. Combining forged carbon steel construction, a tapered weld neck, Extra Heavy pipe bore, and raised-face sealing surface, this flange delivers dependable strength and long-term performance.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 600 weld neck flange provides 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 600 designation identifies an ASME pressure class rather than a maximum working pressure of 600 PSI. Actual allowable pressure depends on material, operating temperature, flange size, and applicable pressure-temperature ratings.
Weld Neck Design for Schedule XH Pipe
A weld neck flange features a long tapered hub that provides a gradual transition between the flange body and connecting pipe. The flange is butt welded directly to Schedule XH (Extra Heavy) pipe, producing a strong permanent joint while helping distribute mechanical and piping stresses through the tapered hub.
The flange bore can be machined to correspond with the Schedule XH pipe wall thickness and inside diameter, helping provide accurate internal alignment and a smooth flow transition through the butt-weld connection.
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 600 A105/SA-105 weld neck flanges provide standardized dimensions, facing requirements, bolt patterns, and pressure-temperature ratings.
When ordering, verify nominal pipe size, Schedule XH bore, Class 600 rating, raised-face configuration, A105/SA-105 material, ASME B16.5 dimensions, gasket requirements, and service conditions for reliable industrial piping performance.