Class 150 Hot Dipped Galvanized Forged Carbon Steel Lap Joint, Flat-Face Flange
Class 150 Hot-Dipped Galvanized A105/SA-105 Lap Joint Flat-Face Flange
The Class 150 ASTM A105 / ASME SA-105 ASME B16.5 Hot-Dipped Galvanized Forged Carbon Steel Lap Joint Flat-Face Flange provides a durable and versatile connection for industrial and commercial piping systems. Combining forged carbon steel strength, corrosion-resistant galvanizing, and convenient lap joint construction, this flange allows easier bolt-hole alignment during installation and maintenance.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this Class 150 lap joint flange provides excellent mechanical strength, toughness, and durability. A105/SA-105 forged carbon steel is widely used for pressure-containing piping components in industrial processing, manufacturing, utilities, water systems, mechanical piping, energy facilities, and general industrial applications.
The Class 150 designation identifies an ASME pressure class rather than a maximum working pressure of 150 PSI. Actual allowable pressure depends on material, flange size, operating temperature, and applicable pressure-temperature ratings.
Lap Joint Flange Design
A lap joint flange is designed for use with a compatible stub end attached to the pipe. The backing flange remains free to rotate behind the stub end, allowing bolt holes to be aligned more easily with the mating flange.
This rotating design can simplify piping installation, equipment connections, maintenance, disassembly, and system modifications, particularly where frequent access or precise bolt alignment is important.
Hot-Dipped Galvanized Corrosion Protection
The hot-dipped galvanized zinc coating helps protect the forged carbon steel backing flange against atmospheric corrosion caused by moisture, humidity, and outdoor weather exposure.
Flat-Face Lap Joint Construction
The flat-faced lap joint flange bears against the back of the compatible stub end. The stub end provides the gasket seating surface for the completed flanged connection.
Manufactured to applicable ASME B16.5 requirements, these flanges provide standardized dimensions, bolt patterns, and pressure-temperature ratings.
When ordering, verify nominal pipe size, Class 150 rating, compatible stub end, A105/SA-105 material, hot-dip galvanized finish, ASME B16.5 dimensions, gasket requirements, and service conditions.