Gas supply pipe.

Yeh you can just make sure the pipe if copper is protected from the concrete or it will get eaten

 

Yep as Meady says it cannot come into contact with the concrete as there will be a chemical reaction and the pipe will eventually decay. The best you can use is plastic coated copper tube and special tape for the joints. The old way was black iron which is hard work to fit. A newer product is a continuos tube know as trackpipe. Google it for more info.

 

Quite a few regs (there always is) when burying pipework (depths, types of joint you can/cannot use, type of protection etc) so it would be a good idea to get someone in who knows what they are doing so that you get the job right. It could be a really expensive rework if it is wrong...

 

your gas safe installer can advise you of the best routing of the pipework. steel would be best, or trac pipe.

 

Or you can get soft copper on 20m rolls, that's what we always use, brilliant stuff, where bouts are you located, someone may be able to help you out.

 

Yes that's OK but the copper must not contact the concrete. Cheapest way is to use "Denso" tape around the pipe. A bit messy but works very well.

diymostthings