Looking for some advice

I need to have a gas pipe installed that will run outside & then back in again
I would rather fit the pipe myself & then get the gas people in to do the connections/testing etc.
Can I do this? – I know I can't work on gas but before it's connected it's not gas, right?

I believe I'll need 22mm coated pipe
Is there anything else that I need to consider?

legally, no, and as a gas safe registered installer there is no way I would do that.

Oh well – wasn't sure but I thought it would be OK if it was all pressure tested etc. before connection to the mains

I'll get someone to do the whole job then – cheers

I wouldn't touch it either, sorry