What are the air pressure for pressure testing of 40,50 and 75mm galvanised pipes?

Hi OD

I am afraid that the answer will be specific to your town/city, county, state, and even country!

Seeing that you provide no information as to what these galvanized pipes are for I can't help much more than that?

Why are you using galvanized pipe... not very common at all nowadays?

Back to you...

Mark