Class 125 ASTM A126 Gray Iron Casting Hot Dipped Galvanized Flange
Class 125 ASTM A126 Gray Iron Hot-Dipped Galvanized Flange
The Class 125 ASTM A126 Gray Iron Casting Hot-Dipped Galvanized Flange combines durable gray cast iron construction with a protective zinc coating for improved resistance to atmospheric corrosion. Designed for compatible commercial, mechanical, and industrial piping systems, these galvanized flanges provide dependable connections for pipe, valves, pumps, fittings, strainers, and other Class 125 flanged equipment.
ASTM A126 Gray Iron Construction
ASTM A126 covers gray iron castings intended for use in valves, flanges, and pipe fittings. Gray cast iron provides good compressive strength, dimensional stability, machinability, and vibration-dampening characteristics for appropriate piping applications.
Class 125 ASTM A126 gray iron components are commonly used in water distribution, HVAC systems, mechanical piping, utilities, pump installations, manufacturing facilities, fire protection systems, and general industrial piping applications.
Hot-Dipped Galvanized Corrosion Protection
The hot-dip galvanizing process applies a protective zinc coating to the gray iron flange. This coating helps protect the underlying metal against atmospheric corrosion caused by moisture, humidity, weather exposure, and many outdoor environments.
Hot-dipped galvanized Class 125 flanges can be especially useful in mechanical rooms, utility installations, outdoor piping, and other applications where additional surface protection is desirable. Galvanized coating compatibility should always be verified for the process fluid, operating temperature, and service environment.
Class 125 Flange Applications
The Class 125 designation represents a pressure class rather than a maximum working pressure of exactly 125 PSI. Actual allowable pressure depends on the ASTM A126 material grade, flange design, size, temperature, and applicable dimensional and pressure standard.
Depending on the application, Class 125 galvanized gray iron flanges may include blind, companion, reducing companion, and other compatible flange configurations.
Selecting a Galvanized ASTM A126 Flange
When ordering a Class 125 ASTM A126 hot-dipped galvanized gray iron flange, verify nominal pipe size, ASTM A126 grade, flange style, facing, galvanized finish, dimensional standard, bolt pattern, gasket selection, bolting requirements, operating temperature, and mating component compatibility.