Hard Plastic Tubing Bunnings. We continue to follow government advice and thank our amazing team for all their hard work helping our customers. Hard plastic pipe would be as stiff as the metal electrical conduit I have some in my old house over the same horizontal distance.
Buy Clear Polycarbonate Tube off-the-shelf. With the right tools hard plastering brick walls is a relatively simple job. Strong lightweight slide and wheel housing and large knurled feed screw knob give easy control of cutting pressure for clean cuts.
When it sets it will be hard in the tubing - pull that off and the contents in the nozzle will be ok.
Visit Bunnings New Zealand today to find your nearest store. Looks like 3-5 mm. We stock a range of raw plastic materials. As far as 316 tubing goes it is fine.