No, the oxygen-resistant aluminum alloy plastic-lined pipe has a two-layer structure, just like the picture you sent above. The outer layer is aerospace 6063 seamless aluminum alloy tube, with anodic oxidation and corrosion resistance. The inner layer is national standard pipe, made of pure imported raw materials, including PERT, PP-R, PB, etc. , which is compounded by linear prestress technology. The aluminum-plastic pipe has a five-layer structure, and the outermost and innermost plastic pipes are pe, PP-R, PEX, etc. The middle layer is a layer of 10μm aluminum foil, and the plastic pipe and aluminum foil are bonded together with two layers of glue.