What is the difference between galvanized and black stove pipe?

What is the difference between galvanized and black stove pipe?

Black steel pipe is different from galvanized pipe because it is uncoated. The pipe is manufactured without a seam, making it a stronger and safer pipe to carry gas. The black steel pipe is also used for fire sprinkler systems because it is more fire-resistant than galvanized pipe.

Does wood stove pipe have to be black?

Absolutely not! Black pipe is not chimney pipe and should only be used up to the point of penetrating the ceiling or wall. Black pipe used outside will run way cooler flue temperatures than class A chimney and will potentially build up creosote quite rapidly increasing the chance of a chimney fire.

What size pipe do you need for a wood stove?

In general, flue size should be 25 percent larger than the size of the stove pipe, which connects the stove to the chimney. This means a stove with a 6-inch diameter pipe would require at least an 8-inch flue; an 8-inch stove pipe requires a 10-inch flue, etc.

Does black stove pipe rust?

Yup. Black is for looks and will rust if installed outside. Galvanized will not rust (or will take longer to rust) when exposed to the outdoors. I’ve always heard that heating anything galvanized is not good due to the fumes given off.

Can black pipe be welded?

Black iron pipe is simply mild low carbon steel so it can be welded to most grades of steel.

Do you have to use double wall pipe for wood stove?

Single-Wall stove pipe can be installed as long as you have a 18″ clearance to a wall, ceiling or floor. If your clearance to combustibles is less than 18″, you have to install double-wall stove pipe. If you have a clearance under 18″ then you must install double-wall pipe.

How hot does double wall stove pipe get?

These pipes only need a 2-inch clearance to combustibles because they remain cool on the outside, while their internal design allows them to withstand temperatures as high as 1,700 or 2,100 degrees Fahrenheit for a limited time.

Do you need double-wall pipe for wood stove?

The reason why you must use double-wall pipe for a clearance of 18″ or under is because it is air insulated. The outside of the double-wall pipe does not radiate heat like single-wall does. The air insulation also allows your wood stove to perform better.

Can you use double-wall stove pipe outside?

To do this requires that the pipe remain cool on the outside by having an internal design that creates a fire-safe venting system. The goal is to minimize the outside diameter of the pipe and the allowable distance from combustibles. This can be 2 inches for double-wall pipe and 1 ½ inches for triple-wall pipe.

Can galvanized pipe be used for wood stove?

Galvanized pipe does not belong in wood heat period. Welding makes extremely high temperatures which will vaporize zinc. You never want to use metal in the parts of a RMH that can get to those temps anyway, and heating the galvanized duct to the point of converting the zinc to a stable form is safe enough.

What is the best way to cut stove pipe?

If single wall, the pipe can usually be opened up and laid flat for a clean cut with straight shears (yellow handle or big straight shears). If the pipe is round you need to use both the red and green shears to cut a strip out of the pipe. The red shear cuts to the left, the green shear cuts to the right.


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