Modify your existing polytunnel or build your own from scratch with our heavy-duty galvanised tubing. These are the tubes we use to manufacture the polytunnel frames in our kits. You can use this tubing to strengthen your tunnel or to build structures within. And of course, it has a 1001 uses around the garden too. One of the great things about polytunnels is that you can create your own unique growing space. Use our heavy-duty tubing to make growing frames, to repair storm damage or simply to strengthen an aging structure that may be showing signs of wear. These industrial strength tubes are suitable for all applications.