jointing copper to black iron gas pipe (red)

[stratplus]

Does anyone on here do much steel pipe for gas?
When joining copper to the steel do you use copper male/female irons or the brass or both?
Had to change some copper to steel outside and another plumber changed the brass clips to malleable iron clips his reason being corrosion. So I was thinking, I'm sure I've seen brass male/female irons fitted directly to the steel to change to copper for kitchen carcasing. Surely this is the same as brass clips for supporting steel.

Seen some posts on other forums (American) where they joint copper to black iron using a special fitting (electric union?) so the two dissimilar metals are separared by a washer. Is black Iron different in the states?

Any thoughts?

 

[ShaunCorbs]

your fine aslong as not copper to galv as galv will win

 

[stratplus]

So is the pipe you'd use for gas lcs. Gas pipe size method says barrel, is this the red lcs?

 

[ShaunCorbs]

So is the pipe you'd use for gas lcs. Gas pipe size method says barrel, is this the red lcs?

yes and heavy gauge black or red oxide, but dont forget about the rule over 2" needs to be welded

copper is fine tho depends on situation

 

[ShaunCorbs]

also normally if it goes to copper from steal you find the person cant thread / doesnt have a clue

 

[spanner]

And remember LCS delivers better consumption rate to copper, which is a good thing. And lots of PTFE.

 

[stratplus]

So the brass clips would be fine with the steel.He also used copper irons instead of brass.

 

[ShaunCorbs]

So the brass clips would be fine with the steel.He also used copper irons instead of brass.

Yes brass clips don't effect iron and copper iron would be fine

 

[stevetheplumber]

it doesnt matter with gas as there is no electolite

 

[quality]

it is also very low pressure so there is minute energy within the pipeline