Because that is what is used for gas.
Black iron pipe is used for gas installations but ONLY if the piping is indoors. Outdoor gas piping is usually done in galvanized pipe. Steam is also piped with black pipe, fire sprinkler and standpipe systems also use black pipe.
You should use black pipe -- Galv. pipe will flake off inside of pipe
I assume you mean black iron pipe, which is used to run the gas line to your furnace.
NO!! Black iron pipe has a special coating to resist the highly corrosive effect of natural gas. Galvenized pipe CANNOT be used for gas service.
No.
Black iron pipe is used for gas installations but ONLY if the piping is indoors. Outdoor gas piping is usually done in galvanized pipe. Steam is also piped with black pipe, fire sprinkler and standpipe systems also use black pipe.
You should use black pipe -- Galv. pipe will flake off inside of pipe
Use only black pipe
a black pipe can not be used in plumbing.Of course black pipe has many used in "plumbing" gas fitting and steam fittingPneumatic lines are specified as black , Fire suppression systems black pipe, gas piping , oil supply , steam and hydronics black pipe
NO..copper,black iron, galvanized for gas pipe.never use plasticp solvents or glue.gas does not react well with other chemicals.
pipe
Coated Copper Pipe that is approved for underground only.
I assume you mean black iron pipe, which is used to run the gas line to your furnace.
wrong gas mix
no
it is a gas
What is the application as many times such as natural gas it is permissible as gas lines exposed to the elements have to be protected painted / insulated or galvanized piping vanized piping