Black iron pipe is used to transport natural and propane gas in residential applications. Piping materials. Black malleable iron piping is also tough when it comes to its temperature rating. Black iron pipe is, simply put, the same thing, but without the zinc coating.
Black pipe doesn't corrode or break down easily.
While the melting point of black iron pipe can exceed 1000F (538C), the teflon tape that holds the joints together can start failing around 500F (260C).
2005. You may be familiar with “galvanized pipe for gas”. For decades, schedule 40 black iron pipe was the default choice for piping gas to furnaces and water heaters. But in the United States, there are about 24 people killed every year in fires caused by leaks or breaks in the natural gas or propane systems. The zinc coating on Black iron pipe … Black steel pipes are more likely to erode than galvanized pipes and for this reason, they tend to be used for transporting gas while galvanized pipes for carrying water. The layer of zinc covering galvanized pipes offers it higher ability of corrosion protection, but as time goes by it can cause the mineral to flake off and block the pipe, which might lead to a burst.
Galvanized pipe fittings should not be used with gas applications. Outdoor gas piping is usually done in galvanized pipe.
A discussion started in 2005 but continuing through 2019. When exposed to the elements, however, black pipe needs to be painted to keep it from rusting. Pipe downstream of meter is homeowner’s. Steel, copper, brass: The most common gas piping is black steel. Mixing galvanized and iron pipe for natural gas lines.
Black pipe fittings (black malleable iron fittings) are used to make connections to black iron pipe.
Incidents causing injury, death, or property damage over $50,000 happen about 286 times a year. Black iron pipe is used for gas installations but ONLY if the piping is indoors.
Q. I was told many years ago that if galvanized and iron pipe were mixed in a natural gas pipe line galvanic reaction would eventually cause …
The piping downstream of the gas meter usually is the responsibility of the homeowner. The piping upstream of the gas meter and the meter itself usually are the responsibility of the gas company.
Also, as Harold mentioned, gal;vanized piping can't be used as natural gas has a tendency to break down the coating causing it to flake and fill orifices of gas equipment.
When the sealant tape fails, the strength of the pipe doesn't matter, as gas will start leaking through the joints. Black Iron Pipe Temperature Rating.