Class 300 ASME A/SA105 ASME B16.5 Hot Dipped Galvanized Steel Flange
Class 300 A/SA105 B16.5 Hot-Dipped Galvanized Steel Flange
The Class 300 ASME A/SA105 ASME B16.5 Hot-Dipped Galvanized Steel Flange combines the strength of forged carbon steel with a protective zinc coating for enhanced corrosion resistance. Designed for demanding commercial and industrial piping systems, these galvanized flanges provide durable connections for pipe, valves, fittings, pumps, and other flanged piping equipment.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, Class 300 galvanized steel flanges provide excellent mechanical strength, toughness, and durability. A105/SA-105 is widely specified for pressure-containing piping components used in industrial processing, manufacturing, utilities, water systems, mechanical piping, fire protection, energy facilities, and general industrial applications where compatible with service conditions.
The Class 300 designation identifies an ASME pressure class rather than a maximum operating pressure of 300 PSI. Actual allowable pressure depends on material, operating temperature, flange size, and applicable pressure-temperature ratings.
Hot-Dipped Galvanized Corrosion Protection
The hot-dip galvanizing process provides a bonded zinc coating over the carbon steel surface. This protective layer helps resist atmospheric corrosion caused by moisture, humidity, weather exposure, and many outdoor environments, extending service life compared with uncoated carbon steel in appropriate applications.
Galvanized coating compatibility should always be verified for the process fluid, chemical environment, and operating temperature.
Class 300 Flange Styles
Depending on size and piping requirements, Class 300 hot-dipped galvanized A/SA105 flanges may be available in threaded, slip-on, blind, weld neck, socket weld, and other applicable configurations, with appropriate flange-facing options.
ASME B16.5 Flange Requirements
ASME B16.5 establishes applicable requirements for flange dimensions, bolt patterns, facing dimensions, tolerances, and pressure-temperature ratings.
When ordering a Class 300 A/SA105 hot-dipped galvanized steel flange, verify nominal pipe size, flange style, facing, material, galvanizing requirements, ASME B16.5 dimensions, gasket selection, and service conditions for dependable industrial piping performance.