Class 600 Forged Carbon Steel Lap Joint, Flat-Face Flange
Class 600 A105/SA-105 Lap Joint Flat-Face Flange
The Class 600 ASTM A105 / ASME SA-105 ASME B16.5 Forged Carbon Steel Lap Joint Flat-Face Flange provides a strong, versatile connection for demanding industrial piping systems. Designed for use with a compatible lap joint stub end, this forged carbon steel flange offers convenient bolt-hole alignment, easier assembly, and accessibility for piping systems requiring periodic maintenance or disassembly.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 600 lap joint flange offers excellent mechanical strength, toughness, and durability. A105/SA-105 forged steel components are widely used throughout oil and gas, petrochemical processing, refineries, power generation, chemical processing, manufacturing, utilities, and industrial process piping systems.
The Class 600 designation represents an ASME pressure class rather than a maximum operating pressure of 600 PSI. Actual allowable pressure depends on material, temperature, system components, and applicable pressure-temperature ratings.
Class 600 Lap Joint Flange Design
A lap joint flange works with a separate stub end attached to the pipe. The backing flange remains free to rotate behind the stub end, making it easier to align bolt holes with the mating flange during installation.
This design can be particularly beneficial for piping systems that require frequent inspection, maintenance, disassembly, or alignment adjustments. Because the backing flange typically does not contact the process fluid, different compatible flange and stub-end materials may be used when permitted by the piping specification.
Flat-Face Flange Construction
The lap joint flange has a flat-faced configuration that bears against the back of the compatible stub end. The stub end provides the gasket seating surface for the completed connection.
Manufactured to applicable ASME B16.5 requirements, Class 600 A105/SA-105 lap joint flanges provide standardized dimensions, bolt patterns, and pressure-temperature ratings.
When ordering, verify nominal pipe size, Class 600 rating, lap joint configuration, compatible stub end, A105/SA-105 material, ASME B16.5 dimensions, and service requirements for reliable industrial piping performance.