After a quick search of Wikipedia (which I mention to excuse any mistakes) but it suggests gas pipe is usually mdpe. It also describes a notch test which seems to correlate to what I meant by whitling.
Also I think someone here previously described gas pipe as mdpe, but the black pipe as hdpe.
After a quick search of Wikipedia (which I mention to excuse any mistakes) but it suggests gas pipe is usually mdpe. It also describes a notch test which seems to correlate to what I meant by whitling.
Also I think someone here previously described gas pipe as mdpe, but the black pipe as hdpe.