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Black vs. Galvanized Pipe Fittings

Black Malleable Iron
45 Degree Elbow Pipe Fitting

Galvanized Malleable Iron
45 Degree Elbow Pipe Fitting

Galvanized pipe fittings are covered with a layer of zinc which makes these fittings have higher ability of corrosion protection and help to prevent the accumulation of mineral deposits that will block the pipe. Galvanized pipe is mainly used for carrying water to supply home and commercial buildings; it may also serve as scaffolding frames because of its rust prevention.

Galvanized pipe fittings are used for countless outdoor and industrial applications because of the material's ability to protect against corrosion and salt. Galvanized pipe and fittings may be used in most applications with the exception of underground lines. While they work best with cold water lines, they may be used with hot water as well. The main advantage of using galvanized fittings is their superior rust resistance when compared to black and copper fittings. Galvanized pipe fittings should not be used with gas applications.

Black pipe fittings are used to make connections to black iron pipe. Black iron pipe is also most often use in fire sprinkler systems due to its high heat resistance and for water supply lines due to its resistance to water damage.
Since it has a dark color surface which is formed by iron oxide during the manufacturing process, it is called black steel pipe.
Black steel pipe is uncoated and it is widely used for transporting gas like propane and natural gas to residential and commercial building.

Uses Black Galvanized
For use with potable water
For use with gas
Sprinkler Systems

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