I have some Black Nylon PA 11-6 compressed air tube for sale if anybody wants to run feed lines in their shed. PA 11-6 is a very stable plastic.

I have a 50 m roll of OD 16mm X 1.5mm wall thickness. TKC brand as used in air brake lines or for long run compressed air delivery. Working Pressure is 1.9 MPa or 275 PSI at up to 120 d Celsius. RS Components sell a similar hose for $678 / 100 m. I'll sell it for $3 / m or $125 for the lot. This hose will work with push fittings but they are a bit pricey in the 16mm size. Metal threaded fittings are available to suit or you can do your own thing if it's a home workshop. The roll is still new and plastic wrapped. I'd rather sell the whole lot or I'll split in half at $75 / 25m. Could be posted at a reasonable price to any where in Australia.

I also have approximately 100m of the same tube but in OD 12mm X 1.5mm rated at 3.2 MPa or 465 PSI. RS Components price is $4.50 per metre so I'd take $2 / m for whatever is left after I use what I need. I'll probably only use half of it. Push fittings for this size are more available and can get cheap from eBay (Hong Kong). I've just ordered 30 fittings (T's, Elbows and BSP threaded couplers) for under $30. I can work out what I need then let you know how much of the roll is left over.