1. Product Advantages
1.1 Material Advantages: Compared to steel, aluminium alloy has only about 1/3 the density, significantly reducing the overall weight of pressure vessels. This makes it particularly suitable for mobile devices (such as vehicle-mounted gas tanks) or applications requiring lightweight construction.
1.2 Corrosion Resistance: Aluminium alloy surfaces readily form a dense oxide film, naturally resisting corrosion from the atmosphere, fresh water, and some chemical media. This eliminates the need for complex anti-corrosion treatments, reducing maintenance costs.
1.3 Pressure Limitations: Due to its material strength, its design pressure is typically lower than that of steel. It is mostly used for low- to medium-pressure applications below 10 MPa and cannot replace high-pressure steel pressure vessel pipes.
2. Technical Parameters
| Alloy grades | Commonly used are 6061-T6 (medium strength, easy to machine) and 5083-H112 (higher corrosion resistance, suitable for marine environments), which should be selected according to the working conditions. |
| Wall thickness and specifications | Must comply with pressure vessel design standards (such as GB 150). Wall thickness must be determined through pressure calculations to avoid safety risks due to insufficient wall thickness. |
| Standards | Domestically, GB/T 4436-2017 "Dimensions and Permissible Deviations of Aluminium and Aluminium Alloy Tubing" must be followed. For pressure-bearing applications, special standards for pressure vessels must also be met. |
3. Product Uses
3.1 New energy sector: Onboard hydrogen cylinders and fuel cell hydrogen supply system piping, utilizing their lightweight and hydrogen embrittlement resistance (partially due to specialized alloys).
3.2 General industry: Low-pressure compressed air storage tanks and small refrigerant storage tanks, suitable for weight-sensitive and corrosive environments (such as humid workshops).
3.3 Transportation: Small pressurized water/oil supply piping for RVs and ships, balancing weight with foundation pressure requirements."
