Aluminium pipes with 3mm wall thickness intended for self-welding. They come in a raw, bare T6060 alloy finish that would benefit from being polished or painted afterwards. These pipes are delivered in a plain form without hose beads with a very short,tight radius. It is recommended to cut a hose joiner in half and weld it on to make a secure rounding that will prevent hoses from popping off. They have a very tight radius to enable compact layouts.